Podcast
Questions and Answers
What is the term used for motion when every point on a moving body moves through the same distance in the same interval of time?
What is the term used for motion when every point on a moving body moves through the same distance in the same interval of time?
- Vibratory motion
- Translatory motion (correct)
- Oscillatory motion
- Rotatory motion
Which type of motion describes the motion of a satellite around the Earth?
Which type of motion describes the motion of a satellite around the Earth?
- Translatory motion
- Rotatory motion
- Vibratory motion
- Circular motion (correct)
How is rectilinear motion defined?
How is rectilinear motion defined?
- Motion around a fixed axis
- Motion along a curved path
- Motion in a straight line (correct)
- Motion to and fro from a fixed position
What type of motion is exhibited by a pendulum?
What type of motion is exhibited by a pendulum?
In indicating rest and motion, why are these terms considered relative?
In indicating rest and motion, why are these terms considered relative?
Which of the following describes vibratory motion?
Which of the following describes vibratory motion?
What distinguishes circular motion from rotatory motion?
What distinguishes circular motion from rotatory motion?
Which example best illustrates curvilinear motion?
Which example best illustrates curvilinear motion?
What type of motion does a pendulum exhibit?
What type of motion does a pendulum exhibit?
Which of the following describes non-uniform motion?
Which of the following describes non-uniform motion?
What is the SI unit of speed?
What is the SI unit of speed?
Which motion is involved when an object moves about a fixed axis?
Which motion is involved when an object moves about a fixed axis?
What defines circular motion?
What defines circular motion?
How is average speed calculated?
How is average speed calculated?
Which type of motion is described when an object moves along a straight line consistently?
Which type of motion is described when an object moves along a straight line consistently?
What is the fundamental difference between mass and weight?
What is the fundamental difference between mass and weight?
An example of curvilinear motion is:
An example of curvilinear motion is:
Which motion is characterized by the swing of a swing set?
Which motion is characterized by the swing of a swing set?
What occurs during vibratory motion?
What occurs during vibratory motion?
Which of the following examples represents random motion?
Which of the following examples represents random motion?
What does a speedometer measure?
What does a speedometer measure?
The Earth rotates around its axis and also revolves around the sun. This is an example of:
The Earth rotates around its axis and also revolves around the sun. This is an example of:
What type of motion does the bob of a pendulum exemplify?
What type of motion does the bob of a pendulum exemplify?
In which scenario is an object considered to be at rest?
In which scenario is an object considered to be at rest?
Which type of motion includes movement about a fixed axis?
Which type of motion includes movement about a fixed axis?
What characterizes curvilinear motion?
What characterizes curvilinear motion?
What distinguishes translatory motion from other types of motion?
What distinguishes translatory motion from other types of motion?
Which of the following describes linear motion?
Which of the following describes linear motion?
What type of motion does the motion of a satellite around the Earth illustrate?
What type of motion does the motion of a satellite around the Earth illustrate?
What is the defining feature of vibratory motion?
What is the defining feature of vibratory motion?
What kind of motion does an object experience when it moves to and fro about a fixed point?
What kind of motion does an object experience when it moves to and fro about a fixed point?
Which of the following best defines non-uniform motion?
Which of the following best defines non-uniform motion?
What type of motion describes the movement of a car along a straight road at constant speed?
What type of motion describes the movement of a car along a straight road at constant speed?
Which statement accurately describes periodic motion?
Which statement accurately describes periodic motion?
In the context of speed, which relationship holds true for a higher speed?
In the context of speed, which relationship holds true for a higher speed?
If an object experiences a change in speed while moving in a straight line, how is its motion classified?
If an object experiences a change in speed while moving in a straight line, how is its motion classified?
Which type of motion is described by an object that travels along a curved path?
Which type of motion is described by an object that travels along a curved path?
What distinguishes vibratory motion from oscillatory motion?
What distinguishes vibratory motion from oscillatory motion?
How is mass defined in physical terms?
How is mass defined in physical terms?
What type of motion would be exhibited by Earth as it rotates on its axis?
What type of motion would be exhibited by Earth as it rotates on its axis?
Which of the following best describes random motion?
Which of the following best describes random motion?
Which phenomenon is an example of uniform motion?
Which phenomenon is an example of uniform motion?
Which unit is used to measure weight in the SI system?
Which unit is used to measure weight in the SI system?
What statement best identifies the nature of translatory motion?
What statement best identifies the nature of translatory motion?
Which description accurately differentiates circular motion from rotatory motion?
Which description accurately differentiates circular motion from rotatory motion?
In the context of oscillatory motion, what best describes the pattern of movement?
In the context of oscillatory motion, what best describes the pattern of movement?
Which example illustrates the principle of relative motion accurately?
Which example illustrates the principle of relative motion accurately?
What best characterizes vibratory motion as distinct from oscillatory motion?
What best characterizes vibratory motion as distinct from oscillatory motion?
In terms of motion types, which of the following best defines curvilinear motion?
In terms of motion types, which of the following best defines curvilinear motion?
Which of the following scenarios represents vibratory motion correctly?
Which of the following scenarios represents vibratory motion correctly?
What accurately describes the mechanism of a satellite's movement in terms of circular motion?
What accurately describes the mechanism of a satellite's movement in terms of circular motion?
What type of motion is described when the speed of an object remains constant throughout its journey?
What type of motion is described when the speed of an object remains constant throughout its journey?
What best describes the nature of the motion of a footballer running across a field?
What best describes the nature of the motion of a footballer running across a field?
Which type of motion is demonstrated by the pendulum of a clock?
Which type of motion is demonstrated by the pendulum of a clock?
The term that defines a motion where the object takes a curved path around a fixed point is called?
The term that defines a motion where the object takes a curved path around a fixed point is called?
Which statement is accurate regarding uniform and non-uniform motion?
Which statement is accurate regarding uniform and non-uniform motion?
In which scenario does an object experience random motion?
In which scenario does an object experience random motion?
What is a distinguishing feature between vibratory motion and oscillatory motion?
What is a distinguishing feature between vibratory motion and oscillatory motion?
Which measurement is taken using an odometer?
Which measurement is taken using an odometer?
How is mass defined in a scientific context?
How is mass defined in a scientific context?
What is indicated when an object moves along a straight line while changing its speed?
What is indicated when an object moves along a straight line while changing its speed?
What type of motion is described when an object's path does not follow a specific route and its velocity varies continuously?
What type of motion is described when an object's path does not follow a specific route and its velocity varies continuously?
Which type of motion is characterized by an object moving to and fro around a mean position?
Which type of motion is characterized by an object moving to and fro around a mean position?
Which of the following best defines translatory motion?
Which of the following best defines translatory motion?
What does a speedometer measure in the context of vehicle motion?
What does a speedometer measure in the context of vehicle motion?
A body is said to be at ______ if it does not change its position with respect to its surroundings.
A body is said to be at ______ if it does not change its position with respect to its surroundings.
The motion of a body along a ______ path is called circular motion.
The motion of a body along a ______ path is called circular motion.
A body is said to have ______ motion if every point on it moves through the same distance in the same interval of time.
A body is said to have ______ motion if every point on it moves through the same distance in the same interval of time.
The two types of motion based on axis are ______ motion and circular motion.
The two types of motion based on axis are ______ motion and circular motion.
______ motion is characterized by the to and fro movement of a body from its rest position.
______ motion is characterized by the to and fro movement of a body from its rest position.
The motion of a pendulum is an example of ______ motion.
The motion of a pendulum is an example of ______ motion.
Curvilinear motion is defined by a body's movement along a ______ path.
Curvilinear motion is defined by a body's movement along a ______ path.
The ______ of a motion involves an object moving about a fixed axis.
The ______ of a motion involves an object moving about a fixed axis.
A motion which gets repeated after a regular interval of time is called _____ motion.
A motion which gets repeated after a regular interval of time is called _____ motion.
When an object moves along a straight line, it possesses _____ motion.
When an object moves along a straight line, it possesses _____ motion.
When the distance of the object from a fixed point remains constant, it possesses _____ motion.
When the distance of the object from a fixed point remains constant, it possesses _____ motion.
When an object moves to and fro about a fixed point, it possesses _____ motion.
When an object moves to and fro about a fixed point, it possesses _____ motion.
If a moving body travels unequal distances in equal intervals of time, its motion is said to be _____ motion.
If a moving body travels unequal distances in equal intervals of time, its motion is said to be _____ motion.
The fastness or slowness of the movement of an object is determined by measuring the _____ traveled with time.
The fastness or slowness of the movement of an object is determined by measuring the _____ traveled with time.
Vibratory motion is a kind of _____ motion where part of the body remains fixed.
Vibratory motion is a kind of _____ motion where part of the body remains fixed.
An object moving in a curved path is said to possess _____ motion.
An object moving in a curved path is said to possess _____ motion.
The _____ of a body is the force with which the earth attracts the body.
The _____ of a body is the force with which the earth attracts the body.
When there is no change in the speed of the object, it is called _____ linear rectilinear motion.
When there is no change in the speed of the object, it is called _____ linear rectilinear motion.
A footballer running on a field is an example of _____ motion.
A footballer running on a field is an example of _____ motion.
The average _____ is calculated by finding the ratio of the total distance travelled by the body to the total time taken.
The average _____ is calculated by finding the ratio of the total distance travelled by the body to the total time taken.
Motion of the molecules of a gas is an example of _____ motion.
Motion of the molecules of a gas is an example of _____ motion.
When an object repeats its motion after a fixed time, it possesses _____ motion.
When an object repeats its motion after a fixed time, it possesses _____ motion.
The basic unit of speed in the SI system is _____ per second.
The basic unit of speed in the SI system is _____ per second.
A body is said to be at ______ if it does not change its position with respect to its immediate surroundings.
A body is said to be at ______ if it does not change its position with respect to its immediate surroundings.
The motion of a box when pushed from one corner of a room to the other is an example of ______ motion.
The motion of a box when pushed from one corner of a room to the other is an example of ______ motion.
The to and fro motion of a body from its rest position is called ______ motion.
The to and fro motion of a body from its rest position is called ______ motion.
Motion of a satellite around the earth is classified as ______ motion.
Motion of a satellite around the earth is classified as ______ motion.
A body is said to be in ______ if it changes its position with respect to its immediate surroundings.
A body is said to be in ______ if it changes its position with respect to its immediate surroundings.
The motion of a cycle while taking a turn on the road is an example of ______ motion.
The motion of a cycle while taking a turn on the road is an example of ______ motion.
In ______ motion, the axis of rotation passes from a point in the body itself.
In ______ motion, the axis of rotation passes from a point in the body itself.
The ______ motion of a pendulum is characterized by its continuous back and forth movement.
The ______ motion of a pendulum is characterized by its continuous back and forth movement.
A motion which does not repeat itself after a regular interval of time is called ______ motion.
A motion which does not repeat itself after a regular interval of time is called ______ motion.
When an object moves along a straight line, it possesses ______ motion.
When an object moves along a straight line, it possesses ______ motion.
The motion of an object that takes a path in no specific direction is called ______ motion.
The motion of an object that takes a path in no specific direction is called ______ motion.
If speed varies, then the motion is called ______ motion.
If speed varies, then the motion is called ______ motion.
When the distance of the object from a fixed point remains constant, it possesses ______ motion.
When the distance of the object from a fixed point remains constant, it possesses ______ motion.
Vibratory motion is a kind of oscillatory motion in which a part of the body always remains ______.
Vibratory motion is a kind of oscillatory motion in which a part of the body always remains ______.
The fastness or slowness of the movement of an object is determined by measuring the ______ traveled with time.
The fastness or slowness of the movement of an object is determined by measuring the ______ traveled with time.
An example of an object that exhibits both translatory and rotatory motion is a ______ rolling on the ground.
An example of an object that exhibits both translatory and rotatory motion is a ______ rolling on the ground.
Mass is the amount of ______ contained in a body.
Mass is the amount of ______ contained in a body.
The SI unit of weight is ______.
The SI unit of weight is ______.
When the movement of an object swings about a mean position, it possesses ______ motion.
When the movement of an object swings about a mean position, it possesses ______ motion.
If speed is the same throughout a journey, then the motion is said to be ______.
If speed is the same throughout a journey, then the motion is said to be ______.
The average speed is calculated by finding the ratio of the total distance traveled by the body to the total ______ taken.
The average speed is calculated by finding the ratio of the total distance traveled by the body to the total ______ taken.
In vibratory motion, the shape and size of the body ______.
In vibratory motion, the shape and size of the body ______.
A body is said to be in motion if it does not change its position with respect to its immediate surroundings.
A body is said to be in motion if it does not change its position with respect to its immediate surroundings.
Translatory motion involves a body moving in a straight line.
Translatory motion involves a body moving in a straight line.
Vibratory motion is characterized by the to and fro motion of a body keeping its rest part fixed.
Vibratory motion is characterized by the to and fro motion of a body keeping its rest part fixed.
Rotatory motion occurs when a body moves along a curved path.
Rotatory motion occurs when a body moves along a curved path.
Oscillatory motion is exemplified by the motion of a pendulum.
Oscillatory motion is exemplified by the motion of a pendulum.
A satellite moving around the Earth is exhibiting rotatory motion.
A satellite moving around the Earth is exhibiting rotatory motion.
Rest and motion are absolute terms that always apply in the same way to all observers.
Rest and motion are absolute terms that always apply in the same way to all observers.
The five types of motion include translatory, circular, oscillatory, vibratory, and rotating motion.
The five types of motion include translatory, circular, oscillatory, vibratory, and rotating motion.
A motion that repeats after a regular interval of time is called non-periodic motion.
A motion that repeats after a regular interval of time is called non-periodic motion.
The movement of gas molecules is an example of random motion.
The movement of gas molecules is an example of random motion.
A pendulum exhibits non-uniform motion.
A pendulum exhibits non-uniform motion.
Translatory motion occurs when an object covers equal distances in equal time intervals.
Translatory motion occurs when an object covers equal distances in equal time intervals.
Vibratory motion is characterized by a fixed part of the body while the rest moves to and fro about it.
Vibratory motion is characterized by a fixed part of the body while the rest moves to and fro about it.
Non-uniform motion occurs when an object travels equal distances in equal intervals of time.
Non-uniform motion occurs when an object travels equal distances in equal intervals of time.
The SI unit of weight is newton (N).
The SI unit of weight is newton (N).
A ball rolling on the ground demonstrates a combination of curvilinear and oscillatory motion.
A ball rolling on the ground demonstrates a combination of curvilinear and oscillatory motion.
If the speed of an object is constant, its motion is referred to as uniform motion.
If the speed of an object is constant, its motion is referred to as uniform motion.
The basic unit of speed is kilometer per hour (km/h).
The basic unit of speed is kilometer per hour (km/h).
Curvilinear motion is defined as movement along a straight path.
Curvilinear motion is defined as movement along a straight path.
An athlete running along a field illustrates non-periodic motion.
An athlete running along a field illustrates non-periodic motion.
Mass measures the force exerted by gravity on a body.
Mass measures the force exerted by gravity on a body.
Random motion is characterized by a specific path followed by the moving object.
Random motion is characterized by a specific path followed by the moving object.
The speedometer measures the distance traveled by a vehicle.
The speedometer measures the distance traveled by a vehicle.
A body at rest can change its position relative to its surroundings.
A body at rest can change its position relative to its surroundings.
Rotatory motion and circular motion are defined by the same axis of rotation.
Rotatory motion and circular motion are defined by the same axis of rotation.
Oscillatory motion is characterized by a body moving to and fro from its rest position.
Oscillatory motion is characterized by a body moving to and fro from its rest position.
Translatory motion involves points on a body moving different distances in the same time interval.
Translatory motion involves points on a body moving different distances in the same time interval.
Curvilinear motion refers to the motion of a body in a straight line.
Curvilinear motion refers to the motion of a body in a straight line.
The motion of a pendulum is an example of vibratory motion.
The motion of a pendulum is an example of vibratory motion.
Relative motion involves an object being in motion with respect to one set of objects while at rest with respect to another.
Relative motion involves an object being in motion with respect to one set of objects while at rest with respect to another.
A spinning top exhibits circular motion.
A spinning top exhibits circular motion.
Non-periodic motion is motion that repeats itself after a regular interval of time.
Non-periodic motion is motion that repeats itself after a regular interval of time.
A footballer's movement on the field is an example of periodic motion.
A footballer's movement on the field is an example of periodic motion.
Rectilinear motion refers to movement along a curved path.
Rectilinear motion refers to movement along a curved path.
Curvilinear motion occurs when an object moves along a straight path.
Curvilinear motion occurs when an object moves along a straight path.
Periodic motion is exemplified by the motion of a pendulum.
Periodic motion is exemplified by the motion of a pendulum.
A car moving at constant speed on a straight road exhibits non-uniform motion.
A car moving at constant speed on a straight road exhibits non-uniform motion.
Random motion is characterized by speed and direction that change continuously.
Random motion is characterized by speed and direction that change continuously.
The motion of the Earth revolves around the sun can be classified as curvilinear motion.
The motion of the Earth revolves around the sun can be classified as curvilinear motion.
Oscillatory motion includes movement that swings about a mean position.
Oscillatory motion includes movement that swings about a mean position.
Weight is the measure of the amount of matter in an object.
Weight is the measure of the amount of matter in an object.
The S.I. unit of mass is newton.
The S.I. unit of mass is newton.
A ball rolling on the ground exhibits mixed motion, combining both translatory and rotatory motion.
A ball rolling on the ground exhibits mixed motion, combining both translatory and rotatory motion.
A speedometer measures the weight of a vehicle.
A speedometer measures the weight of a vehicle.
For equal distance, a shorter travel time indicates a higher speed.
For equal distance, a shorter travel time indicates a higher speed.
Uniform motion involves traveling unequal distances in equal intervals of time.
Uniform motion involves traveling unequal distances in equal intervals of time.
How can the same object be considered in motion and at rest?
How can the same object be considered in motion and at rest?
What is the defining property of translatory motion?
What is the defining property of translatory motion?
What distinguishes rotatory motion from circular motion?
What distinguishes rotatory motion from circular motion?
Can you give an example of oscillatory motion?
Can you give an example of oscillatory motion?
What characterizes vibratory motion?
What characterizes vibratory motion?
What is an example of curvilinear motion?
What is an example of curvilinear motion?
In the context of motion, how is rest defined?
In the context of motion, how is rest defined?
What type of motion does the motion of a satellite around the Earth illustrate?
What type of motion does the motion of a satellite around the Earth illustrate?
What type of motion is characterized by an object moving back and forth around a fixed point?
What type of motion is characterized by an object moving back and forth around a fixed point?
How is weight defined in the context of physics?
How is weight defined in the context of physics?
What is the difference between uniform and non-uniform motion?
What is the difference between uniform and non-uniform motion?
What type of motion does a satellite in orbit illustrate?
What type of motion does a satellite in orbit illustrate?
What does the term translatory motion refer to?
What does the term translatory motion refer to?
What is the basic unit of time in the SI system?
What is the basic unit of time in the SI system?
How is average speed calculated?
How is average speed calculated?
What characterizes random motion?
What characterizes random motion?
What kind of motion occurs when an object's distance from a fixed point remains constant?
What kind of motion occurs when an object's distance from a fixed point remains constant?
What does a speedometer measure?
What does a speedometer measure?
What type of motion is displayed by a ball rolling on the ground?
What type of motion is displayed by a ball rolling on the ground?
What is an example of periodic motion?
What is an example of periodic motion?
What distinguishes mass from weight in physics?
What distinguishes mass from weight in physics?
How is the speed of an object determined?
How is the speed of an object determined?
How can an observer be at rest relative to one object and in motion relative to another?
How can an observer be at rest relative to one object and in motion relative to another?
Differentiate between translatory motion and rotatory motion.
Differentiate between translatory motion and rotatory motion.
What is the primary distinction between circular motion and rotational motion?
What is the primary distinction between circular motion and rotational motion?
How does oscillatory motion differ from vibratory motion?
How does oscillatory motion differ from vibratory motion?
Explain the term curvilinear motion with an example.
Explain the term curvilinear motion with an example.
What illustrates the concept of relative motion in everyday situations?
What illustrates the concept of relative motion in everyday situations?
Identify a key characteristic of oscillatory motion.
Identify a key characteristic of oscillatory motion.
In the context of the described types of motion, what defines vibratory motion?
In the context of the described types of motion, what defines vibratory motion?
What type of motion occurs when an object moves with a constant speed in a circular path?
What type of motion occurs when an object moves with a constant speed in a circular path?
Define oscillatory motion and provide an example.
Define oscillatory motion and provide an example.
What characteristics define non-uniform motion?
What characteristics define non-uniform motion?
How does translatory motion differ from other types of motion?
How does translatory motion differ from other types of motion?
What do we call a motion that does not repeat at regular intervals?
What do we call a motion that does not repeat at regular intervals?
Explain the concept of average speed and how it's calculated.
Explain the concept of average speed and how it's calculated.
What is the distinction between mass and weight?
What is the distinction between mass and weight?
Describe what is meant by vibratory motion.
Describe what is meant by vibratory motion.
What kind of motion does a ball rolling down a slope exhibit?
What kind of motion does a ball rolling down a slope exhibit?
How is the speed of an object measured?
How is the speed of an object measured?
What type of motion is described when the movement path is unpredictable?
What type of motion is described when the movement path is unpredictable?
Define the term 'curvilinear motion' with an example.
Define the term 'curvilinear motion' with an example.
What is the fundamental characteristic of rectilinear motion?
What is the fundamental characteristic of rectilinear motion?
What type of motion can be observed in a pendulum?
What type of motion can be observed in a pendulum?
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Study Notes
Rest and Motion
- A body is at rest if its position doesn't change relative to its surroundings.
- A body is in motion if its position changes relative to its surroundings.
- Rest and motion are relative terms.
- For example, a boy sitting on a bench in a bus stop sees the moving bus, but to the boy on the bus, the trees and the boy on the bench are moving.
Types of Motion
- Translatory motion: Every point on the moving body moves the same distance in the same time.
- Rectilinear motion: Straight line movement.
- Curvilinear motion: Movement along a curved path.
- Rotatory motion: Movement around a fixed axis.
- Circular motion: Movement along a circular path.
- Oscillatory motion: To and fro movement from a rest position.
- Vibratory motion: To and fro movement of a part of a body, while the rest is fixed.
- Periodic motion: Movement repeated after a regular time interval.
- Non-periodic motion: Movement that doesn´t repeat after a regular time interval.
- Random motion: Movement in no specific direction.
Speed
- Speed is the rate at which an object moves.
- A speedometer measures speed.
- An odometer measures distance.
- Speed = Distance / Time
Uniform and Non-uniform Motion
- Uniform motion: Equal distances are traveled in equal time intervals.
- Non-uniform motion: Unequal distances are traveled in equal time intervals.
Mass and Weight
- Mass: The amount of matter in a body. Measured by a beam balance. Unit: kilogram (kg).
- Weight: The force exerted on a body due to gravity. Measured by a spring balance. Unit: Newton (N).
Mixed Motion
- The Earth has rotatory motion (spinning on its axis) and curvilinear/circular motion (orbiting the Sun).
- A ball rolling on the ground has rotatory motion (spinning) and translatory motion (moving across the ground).
Average Speed
- Average speed = Total distance traveled / Total time
Rest and Motion
- A body is at rest if it does not change its position with respect to its surroundings.
- A body is in motion if it changes position with respect to its surroundings.
- Rest and motion are relative terms.
Types of Motion
- Translatory Motion: Every point on the moving body moves the same distance in the same time interval.
- Rectilinear Motion: Motion along a straight line.
- Curvilinear Motion: Motion along a curved path.
- Rotatory Motion: A body moves about a fixed axis.
- Circular Motion: A body moves along a circular path.
- The axis of rotation in rotatory motion passes through a point in the body.
- The axis of rotation in circular motion passes through a point outside the body.
- Oscillatory Motion: To and fro motion of a body from its rest position.
- Vibratory Motion: To and fro motion of a part of a body, where the rest of the body is fixed.
- Periodic Motion: Motion that repeats after a regular interval of time.
- Non-Periodic Motion: Motion that does not repeat after a regular interval of time.
- Random Motion: Motion without a specific path, with continuously changing speed and direction.
Speed
- Speed is how fast an object travels.
- Uniform Motion: A body travels equal distances in equal intervals of time.
- Non-Uniform Motion: A body travels unequal distances in equal intervals of time.
- Average Speed: Total distance travelled divided by total time taken.
- Speed is measured using a speedometer.
Distance
- Distance covered equals speed multiplied by time.
- Key Facts about Distance and Speed:
- For the same distance, less travel time means higher speed.
- For the same time interval, greater travelled distance means higher speed.
Time
- The basic unit of time is the second (s).
Units
- Basic unit of speed is meters per second (m/s).
Mass and Weight
- Mass: The amount of matter contained in a body. Measured with a beam balance. S.I. unit is kilogram (kg).
- Weight: The force exerted on a body due to gravity. Measured with a spring balance. S.I unit is Newton (N).
- Weight always acts downwards.
Mixed Motion
- The Earth has rotatory motion (around itself) and curvilinear motion (around the Sun).
- A ball rolling on the ground has rotatory motion and translatory motion.
###Â Rest and Motion
- Motion is the change in position of an object with time.
- Rest and motion are relative terms.
- A body at rest remains at rest and a body in motion remains in motion unless acted upon by a force.
- Motion is classified into different types based on the path and pattern of movement.
Types of Motion
- Translatory motion: All points on the body move the same distance in the same time.
- Rectilinear motion: Motion in a straight line.
- Curvilinear motion: Motion along a curved path.
- Rotatory motion: Motion around a fixed axis.
- Circular motion: Motion along a circular path.
- Oscillatory motion: To and fro motion from a rest position.
- Vibratory motion: To and fro motion of a part of the body while the rest is fixed.
- Periodic motion: Motion repeating after a regular time interval.
- Non-periodic motion: Motion not repeating after a regular time interval.
- Random motion: Motion with no specific path, speed or direction, constantly changing.
Speed
- Speed is the distance traveled per unit time.
- Speed = Distance / Time
- Uniform motion: Constant speed throughout the journey.
- Non-uniform motion: Varying speed throughout the journey.
- Speedometer measures the speed of a vehicle.
- Odometer measures the distance traveled by a vehicle.
Units of Measurement
- Time is measured in seconds (s).
- Speed is measured in meters per second (m/s).
Mass and Weight
- Mass is the amount of matter in a body.
- Weight is the force of gravity acting on a body.
- Mass is measured using a beam balance (kilograms).
- Weight is measured using a spring balance (newtons).
- Weight always acts downwards.
Examples of Mixed Motion
- The Earth rotates on its axis (rotatory) and revolves around the sun (circular/curvilinear, periodic).
- A ball rolling on the ground has both rotatory and translatory motion.
Uniform and Non-uniform Motion
- Uniform motion: Equal distances covered in equal time intervals.
- Non-uniform motion: Unequal distances covered in equal time intervals.
Average Speed
- Average speed = Total distance / Total time
Rest and Motion
- Rest and motion are relative terms.
- An object can be in motion relative to one object and at rest relative to another.
- Motion is the change in position of an object over time.
- Rest describes a state of no change in position.
Types of Motion
- Translatory Motion is the movement of an object where every point on it moves the same distance in the same time.
- Rectilinear Motion: motion in a straight line
- **Curvilinear Motion:**motion in a curved path
- Rotatory Motion: Rotation around a fixed internal axis ( spinning top, merry-go-round)
- Circular Motion: Rotation around a fixed external axis (satellite around the Earth)
- Oscillatory Motion: To-and-fro motion around a fixed point (pendulum)
- Vibratory Motion: To-and-fro motion of a part of a body, while the rest remains fixed (tabla membrane)
- Periodic Motion: Motion that repeats after a regular interval
- Non-periodic Motion: Motion that does not repeat at regular intervals
- Random Motion: Motion without a specific path, with continuously changing speed and direction (molecules of a gas)
Speed
- Speed describes how fast an object is moving
- Speed is calculated by dividing the total distance traveled by the total time taken.
- Uniform Motion: Constant speed throughout a journey
- Non-uniform Motion: Speed varies during the journey.
- Speed is measured by a speedometer
- Distance is measured by an odometer
Units
- Second (s) is the basic unit of time.
- Meter per second (m/s) is the basic unit of speed.
Mass and Weight
- Mass: Quantity of matter contained in a body.
- Weight: Force exerted on a body due to gravity
- Mass is measured by a beam balance
- Weight is measured by a spring balance
- The SI unit of mass is the kilogram (kg)
- The SI unit of weight is the Newton (N)
- Weight acts vertically downwards.
Mixed Motion
- The Earth rotates on its axis (rotatory motion) while revolving around the Sun (circular motion) – Both motions are periodic.
- A rolling ball simultaneously rotates and translates.
Uniform and Non-uniform Motion
- Uniform Motion: An object covers equal distances in equal intervals of time.
- Non-uniform motion: An object covers unequal distances in equal intervals of time.
Average Speed
- Average speed is calculated by dividing the total distance traveled by the total time taken.
- Average speed = total distance traveled / total time
Rest and Motion
- Rest and motion are relative terms, meaning an object can be at rest relative to one object and in motion relative to another
- A stationary object does not change position relative to its surroundings
- A moving object changes its position relative to its surroundings
Types of Motion
- Translatory Motion: Every point on the object moves the same distance in the same time interval; examples include a box being pushed across a room
- Rectilinear/Linear Motion: The object moves in a straight line, such as a car on a straight road
- Curvilinear Motion: The object moves along a curved path, such as a cyclist taking a turn
- Rotatory Motion: An object spins around a fixed axis, such as a spinning top, a merry-go-round
- Circular Motion: An object moves along a circular path, such as a satellite orbiting Earth
- Oscillatory Motion: An object moves back and forth from its rest position, such as a pendulum swinging
- Vibratory Motion: A to-and-fro motion of a part of an object keeping its other parts fixed, such as the vibration of a tabla membrane
- Periodic Motion: A motion that repeats after a fixed time interval, such as the pendulum of a clock swinging
- Non-Periodic Motion: A motion that does not repeat itself at regular intervals, such as a footballer running on a field
- Random Motion: An object moves in no specific direction, like the motion of gas molecules
Speed and Its Measurement
- Speed is the rate at which an object covers distance
- Speed = Total distance covered / Total time taken
- Uniform motion: The object travels equal distances in equal time intervals (constant speed)
- Non-uniform motion: The object travels unequal distances in equal time intervals (varying speed)
- Speed is measured by a speedometer
- Distance covered is measured by an odometer
Units of Measurement
- Time: The basic unit is the second (s).
- Speed: The basic unit is meters per second (m/s).
Mass and Weight
- Mass: The amount of matter in a body, measured in kilograms (kg) using a beam balance
- Weight: The force exerted on a body by gravity, measured in newtons (N) using a spring balance; its direction is always vertically downwards
Mixed Motion
- An object can exhibit multiple types of motion simultaneously
- Earth's rotation and revolution: Rotates around its axis and revolves around the Sun
- A rolling ball: Has both rotatory and translatory motion
Average Speed
- Calculated as the total distance traveled divided by the total time taken
- Average speed = Total distance traveled / Total time
Uniform and Non-Uniform Motion
- Uniform motion: Equal distances are covered in equal time intervals, like a car traveling at constant speed on a straight road.
- Non-uniform motion: Unequal distances are covered in equal time intervals, like a bicycle moving in a busy road.
Motion and Rest
- Rest and motion are relative terms.
- Motion is the change in position of an object with respect to its surroundings over time.
- A body at rest does not change position relative to its surroundings.
Types of Motion
- Translatory motion: Every point on the moving body moves the same distance in the same time.
- Rectilinear or linear motion: Motion in a straight line.
- Curvilinear motion: Motion along a curved path.
- Rotatory motion: A body moves around a fixed axis.
- Circular motion: Motion along a curved path where the radius of the curve is constant.
- Oscillatory motion: A body moves back and forth about a fixed position.
- Vibratory motion: A part of the body moves back and forth about a fixed position.
- Periodic motion: A motion that repeats itself at regular intervals.
- Non-periodic motion: A motion that does not repeat itself at regular intervals.
- Random motion: Motion that occurs in no specific direction with constantly changing speed and direction.
- Mixed motion: A combination of two or more types of motion.
- The Earth has both rotatory and circular motion.
- A rolling ball has both rotatory and translatory motion.
Describing Motion
- Uniform motion: A body travels equal distances in equal intervals of time, at a constant speed.
- Non-uniform motion: A body travels unequal distances in equal intervals of time, with varying speed.
- Speed: Measures how fast an object moves.
- Average speed: The total distance traveled divided by the total time taken.
- Distance: The total length of the path traveled by an object.
- Units:
- Time: seconds (s)
- Speed: meters per second (m/s)
- Distance: meters (m)
- Weight: The force exerted on an object due to gravity.
- Measured in newtons (N)
- Mass: The amount of matter in an object.
- Measured in kilograms (kg)
- Mass vs. Weight:
- Mass: Quantity of matter.
- Weight: Force due to gravity.
Motion and Rest
- An object is at rest if it does not change its position in relation to its surroundings.
- An object is in motion if it changes its position in relation to its surroundings.
- Motion and rest are relative concepts.
Types of Motion
- Translatory Motion: All parts of the object move the same distance in the same time.
- Rectilinear motion: Motion in a straight line.
- Curvilinear motion: Motion along a curved path.
- Rotatory Motion: Motion around a fixed axis.
- Circular Motion: Motion along a circular path.
- Oscillatory Motion: To and fro motion around a fixed position (like a pendulum).
- Vibratory Motion: To and fro motion of a part of the body, while another part remains fixed, often with changes in shape or size.
- Periodic Motion: Motion that repeats at regular intervals.
- Non-periodic Motion: Motion that does not repeat at regular intervals.
- Random Motion Motion with no specific direction, speed, or path.
Speed
- Speed: Measurement of how fast something is moving.
- Speed = Distance / Time
- Uniform Motion: Constant speed over a journey.
- Non-uniform Motion: Speed changes during a journey.
- Units:
- Time: seconds (s)
- Speed: meters per second (m/s).
Mass and Weight
- Mass: The amount of matter in an object.
- Weight: The force of gravity acting on an object.
- Units:
- Mass: kilograms (kg)
- Weight: newtons (N)
Mixed Motion
- Earth exhibits rotatory motion (spinning on its axis) and circular motion (orbiting the Sun).
- A rolling ball on the ground exhibits rotatory and translatory motion.
Average Speed
- Average speed: Total distance travelled divided by total time taken.
Uniform vs. Non-uniform Motion
- Uniform motion: Equal distances are covered in equal intervals of time.
- Non-uniform motion: Unequal distances are covered in equal intervals of time.
Rest and Motion
- Rest and motion are relative terms, meaning they depend on the frame of reference.
- An object can be in motion relative to one object, while at rest relative to another.
- Example: A person sitting on a bus sees the trees outside as stationary but the bus is moving, while a person inside the bus sees the trees moving in the opposite direction and the bus is stationary.
Types of Motion
- Translatory motion: Every point on the moving body moves the same distance in the same time.
- Rectilinear motion: Movement in a straight line.
- Curvilinear motion: Movement along a curved path.
- Rotatory motion: Movement around a fixed axis.
- Circular motion: Movement along a circular path.
- Oscillatory motion: To and fro motion of a body from its rest position.
- Vibratory motion: To and fro motion of a part of the body with the rest part fixed.
- Periodic motion: Motion that repeats after a regular interval of time.
- Non-periodic motion: Motion that does not repeat after a regular interval of time.
- Random motion: Motion with no specific path, constantly changing speed and direction.
Examples of Combined Motions
- Earth's motion: Rotates on its axis (rotatory motion) and revolves around the sun (circular motion).
- Rolling ball: Combines rotatory and translatory motion.
Speed
- Speed: The rate of change of distance traveled by an object.
- Uniform motion: Constant speed throughout the journey.
- Non-uniform motion: Speed varies during the journey.
- Speedometer: Measures speed.
- Odometer: Measures distance traveled.
- Calculating distance: Distance = Speed × Time
Units
- Time: Second (s)
- Speed: Meter per second (m/s)
Mass & Weight
- Mass: Amount of matter in a body. Measured by a beam balance. Unit: kilogram (kg).
- Weight: Force exerted on a body due to gravity. Measured by a spring balance. Unit: newton (N).
- Weight's direction: Always vertically downwards.
Average Speed
- Calculated by dividing the total distance traveled by the total time taken.
- Average speed = total distance travelled /total time
Uniform & Non-Uniform Motion
- Uniform motion: Equal distances covered in equal intervals of time.
- Non-uniform motion: Unequal distances covered in equal intervals of time.
Rest and Motion
- Rest and motion are relative terms, meaning an object can be in motion relative to one object but at rest relative to another.
- Example: A boy sitting on a bench sees a moving bus, for him the bus is in motion but the trees are at rest.
Types of Motion
- Translatory Motion: Every point on the moving body moves the same distance in the same time.
- Rectilinear or Linear Motion: Motion along a straight line (e.g., a car on a straight road).
- Curvilinear Motion: Motion along a curved path (e.g., a cycle taking a turn).
- Rotatory Motion: A body moves about a fixed axis (e.g., a spinning top).
- Circular Motion: A body moves along a circular path (e.g., a satellite around Earth).
- Oscillatory Motion: To and fro motion about a fixed point (e.g., a pendulum).
- Vibratory Motion: To and fro motion of a part of a body while the rest is fixed (e.g., a tabla membrane).
- Periodic Motion: Repeats itself after a regular time interval (e.g., a pendulum clock).
- Non-periodic Motion: Does not repeat itself regularly (e.g., a footballer running).
- Random Motion: Unpredictable path, speed, and direction changes continuously (e.g., gas molecules).
Motion Combinations:
- An object can have multiple types of motion concurrently. For example:
- The Earth has rotatory motion (spinning on its axis) and circular motion (revolving around the sun).
- A ball rolling on the ground has translatory motion and rotatory motion.
Uniform and Non-uniform Motion
- Uniform Motion: Equal distances covered in equal time intervals (e.g., a car traveling at constant speed).
- Non-uniform Motion: Unequal distances covered in equal time intervals (e.g., a bicycle in traffic).
Speed
- Measures the rate of change of distance over time.
- Formula: Speed = Total distance covered / Total time taken.
- Measured by a speedometer.
- Units: Metre per second (m/s).
Distance
- Formula: Distance = Speed x Time.
- Measured by an odometer.
Mass vs Weight
- Mass: Quantity of matter in a body.
- Measured by a beam balance.
- Unit: Kilogram (kg).
- Weight: Force exerted on a body due to gravity.
- Measured by a spring balance.
- Unit: Newton (N).
- Always acts vertically downwards.
Average Speed
- Total distance traveled divided by the total time taken.
- Formula: Average speed = Total distance / Total time.
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