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Questions and Answers
When an object experiences motion in both horizontal and vertical directions simultaneously, what type of motion is it exhibiting?
When an object experiences motion in both horizontal and vertical directions simultaneously, what type of motion is it exhibiting?
- Projectile motion (correct)
- Curvilinear motion
- Rectilinear motion
- Uniform motion
Which of the following best describes a projectile in physics?
Which of the following best describes a projectile in physics?
- An object that remains stationary.
- An object that experiences no acceleration.
- An object propelled into the air upon which the only force acting is gravity (correct)
- An object moving with constant velocity.
What term describes the curved path followed by a projectile in motion?
What term describes the curved path followed by a projectile in motion?
- Amplitude
- Velocity
- Trajectory (correct)
- Displacement
In the context of throwing a basketball, which statement accurately describes its motion?
In the context of throwing a basketball, which statement accurately describes its motion?
Why does water escaping a hose demonstrate projectile motion?
Why does water escaping a hose demonstrate projectile motion?
When an archer releases an arrow, what causes it to exhibit projectile motion?
When an archer releases an arrow, what causes it to exhibit projectile motion?
What distinguishes curvilinear motion from other types of motion?
What distinguishes curvilinear motion from other types of motion?
Which scenario best exemplifies rectilinear motion?
Which scenario best exemplifies rectilinear motion?
How is speed defined in relation to an object's motion?
How is speed defined in relation to an object's motion?
Which of the following statements accurately defines velocity?
Which of the following statements accurately defines velocity?
What does initial velocity describe in the context of projectile motion?
What does initial velocity describe in the context of projectile motion?
In physics, what does 'acceleration' specifically refer to?
In physics, what does 'acceleration' specifically refer to?
Under what conditions can an object be described as not accelerating?
Under what conditions can an object be described as not accelerating?
What is the key characteristic of projectile motion when considering its two-dimensional nature?
What is the key characteristic of projectile motion when considering its two-dimensional nature?
Which statement best characterizes projectile motion in terms of vertical and horizontal components?
Which statement best characterizes projectile motion in terms of vertical and horizontal components?
What could be inferred from the picture of the wall, truck, and car?
What could be inferred from the picture of the wall, truck, and car?
What term describes a moving object's tendency to resist changes in its state of motion?
What term describes a moving object's tendency to resist changes in its state of motion?
Which of the following statements accurately describes momentum?
Which of the following statements accurately describes momentum?
What two variables primarily determine the amount of momentum an object has?
What two variables primarily determine the amount of momentum an object has?
For bodies moving at the same velocity, which statement is true regarding momentum?
For bodies moving at the same velocity, which statement is true regarding momentum?
For moving bodies with the same mass, what factor determines which has greater momentum?
For moving bodies with the same mass, what factor determines which has greater momentum?
How is momentum calculated in terms of mass and velocity?
How is momentum calculated in terms of mass and velocity?
A 5 kg bowling ball is traveling at 2 m/s towards the pins. Calculate the momentum of the bowling ball.
A 5 kg bowling ball is traveling at 2 m/s towards the pins. Calculate the momentum of the bowling ball.
A ball with a mass of 0.5 kg is moving northward at a velocity of 10 m/s. What is the momentum of the ball?
A ball with a mass of 0.5 kg is moving northward at a velocity of 10 m/s. What is the momentum of the ball?
What does Newton's Second Law of Motion, also known as the Law of Acceleration, fundamentally state?
What does Newton's Second Law of Motion, also known as the Law of Acceleration, fundamentally state?
Given that Force = Mass * Acceleration, which of the following is the correct formula?
Given that Force = Mass * Acceleration, which of the following is the correct formula?
If Newton's Second Law of Motion is rearranged to define impulse (J), which expression correctly represents impulse delivered by a constant force F?
If Newton's Second Law of Motion is rearranged to define impulse (J), which expression correctly represents impulse delivered by a constant force F?
How can impulse be mathematically expressed in relation to momentum?
How can impulse be mathematically expressed in relation to momentum?
The impulse (J) on an object can be described by the equations $J = \Delta p$ or $J = mv$. In what context are these equations valid?
The impulse (J) on an object can be described by the equations $J = \Delta p$ or $J = mv$. In what context are these equations valid?
Given the equation $v = v_f - v_i$, how is the impulsive force (F) typically expressed?
Given the equation $v = v_f - v_i$, how is the impulsive force (F) typically expressed?
A 0.1 kg ball's velocity changes from 20 m/s to 30 m/s due to an applied force over 0.5 seconds. Calculate the impulse experienced by the ball.
A 0.1 kg ball's velocity changes from 20 m/s to 30 m/s due to an applied force over 0.5 seconds. Calculate the impulse experienced by the ball.
A baseball with a mass of 0.15 kg is thrown and attains a velocity of 40 m/s. Calculate the momentum of the baseball.
A baseball with a mass of 0.15 kg is thrown and attains a velocity of 40 m/s. Calculate the momentum of the baseball.
What happens to the vertical and horizontal components of motion in projectile motion?
What happens to the vertical and horizontal components of motion in projectile motion?
A car accelerates from rest to 25 m/s in 5 seconds. If the car has a mass of 1200 kg, what is the impulse on the car?
A car accelerates from rest to 25 m/s in 5 seconds. If the car has a mass of 1200 kg, what is the impulse on the car?
A 2 kg object is initially moving at 5 m/s. After a force is applied, its velocity increases to 15 m/s. What is the change in momentum of the object?
A 2 kg object is initially moving at 5 m/s. After a force is applied, its velocity increases to 15 m/s. What is the change in momentum of the object?
A hockey puck with a mass of 0.2 kg is at rest. After being struck by a hockey stick, it reaches a velocity of 20 m/s. If the impact lasted for 0.01 seconds, what was the magnitude of the average force applied by the stick?
A hockey puck with a mass of 0.2 kg is at rest. After being struck by a hockey stick, it reaches a velocity of 20 m/s. If the impact lasted for 0.01 seconds, what was the magnitude of the average force applied by the stick?
An object with a mass of 4 kg initially moves at a velocity of 6 m/s. After an impulse is applied, its velocity becomes 10 m/s in the same direction. What impulse was applied to the object?
An object with a mass of 4 kg initially moves at a velocity of 6 m/s. After an impulse is applied, its velocity becomes 10 m/s in the same direction. What impulse was applied to the object?
A toy car with a velocity of 1.4 m/s has a momentum of 7 kg * m/s to the South. Find the mass of the scooter.
A toy car with a velocity of 1.4 m/s has a momentum of 7 kg * m/s to the South. Find the mass of the scooter.
With an impulse of 6 Ns and the mass equal to 0.03 kg, what is $\Delta v$?
With an impulse of 6 Ns and the mass equal to 0.03 kg, what is $\Delta v$?
Flashcards
Projectile Motion
Projectile Motion
The motion of an object in two dimensions.
Projectile
Projectile
An object that is launched and subject only to the force of gravity.
Trajectory
Trajectory
The curved path followed by a projectile.
Curvilinear motion
Curvilinear motion
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Rectilinear motion
Rectilinear motion
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Speed
Speed
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Velocity
Velocity
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Initial velocity
Initial velocity
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Final Velocity
Final Velocity
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Acceleration
Acceleration
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Momentum
Momentum
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Momentum Equation
Momentum Equation
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Newton's Second Law
Newton's Second Law
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Impulse
Impulse
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Impulse Equation
Impulse Equation
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Study Notes
- Projectile motion is the motion of an object in two dimensions.
- An object exhibits projectile motion by moving in both the horizontal and vertical directions simultaneously.
Projectile and Trajectory
- A projectile is an object being launched where gravity is the only acting force.
- A trajectory is the curved path followed by a projectile.
Projectile Motion in Real Life
- Throwing a basketball in the basket involves the ball moving along the horizontal direction while rising in height at the same time.
- Water escaping a hose follows a parabolic path because it moves in a vertical and horizontal direction simultaneously.
- In archery, when an archer pulls an arrow and releases it in the air at a particular angle, the arrow moves along the x and y-axis simultaneously.
Two Types of Projectile Motion
- Curvilinear motion involves objects moving in a curved path due to a sideways push.
- Examples of objects with curvilinear motion include a cyclist moving around a circular bend or an airplane doing a "loop the loop" flight exercise.
- Rectilinear motion involves objects moving in straight lines.
- This type of motion occurs when objects move freely, like a stone falling from a building.
Speed
- Speed is the distance traveled per unit of time.
- Speed is the scalar quantity that is the magnitude of the velocity vector.
- Speed does not have a direction.
- Higher speed means an object is moving faster.
Velocity
- Velocity can be defined as the rate of change of the object's position with respect to a frame of reference and time.
- Initial velocity describes how fast an object travels when gravity first applies force on the object.
- Final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.
Acceleration
- Acceleration refers to any process where the velocity changes.
- Velocity is speed and direction.
- There are two ways to accelerate: change speed or change direction, or both.
- If a subject is not changing its speed or direction, they are not accelerating.
Two-Dimensional Motion
- In projectile motion, the vertical and horizontal motions are independent and can be treated separately.
- Projectile motion is a combination of vertical motion with constant acceleration and horizontal motion with constant velocity.
Momentum
- Momentum is a moving object's tendency to resist any change in its state of motion.
- It refers to the quantity of motion that an object has.
- Momentum can be defined as “inertia in motion”.
- The amount of momentum is dependent on two variables: how much an object is moving and how fast it is moving.
- For bodies moving at the same velocity, the more massive body has greater inertia in motion, therefore it has greater momentum.
- For moving bodies with the same mass, the faster body has greater inertia in motion, therefore has greater momentum.
- Momentum(p) = mass(m) * velocity(v)
Impulse
- Newton's Second Law of Motion (Law of Acceleration) states that the force required to change an object's motion is equal to the mass of the object multiplied by the acceleration of an object, where Force = Mass * Acceleration or F = ma
- Impulse can be expressed as the change in momentum of an object J = ∆p or J = m•v where m is the mass of the body and v is the velocity in which the body is moving
- Velocity is given as v = Vf- Vì where vi is the initial velocity and vf is the final velocity, where the impulsive force is given as F = ma or F = m (Vf-Vi)/ t
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