14 Questions
What is the shortest path covered by a moving object in a specified direction from the point of reference?
Displacement
What is the unit of displacement?
Meter
What is the formula to calculate displacement?
xf - xi
If an object travels from +1 to +4, what is its displacement?
+3
What is the condition for an object to be considered in motion?
Its position in relation to its surroundings changes in a given time
If an object travels from -3 to -1, what is its displacement?
+2
What is the nature of displacement?
Vector
What serves as the frame of reference in Figure 1 and Figure 2?
The tree
What is the type of motion where a particle moves from one point in space to another?
Translatory motion
What is the movement of particles around a fixed point?
Vibratory motion
What is the SI unit of distance?
Meter
What is the total distance traveled by the bus from A to B and then from B to A?
300 km
What is the type of motion involved when a car negotiates a curve?
Curvilinear motion
What is the characteristic of distance?
It is a scalar quantity
Study Notes
Motion and Rest
- An object is said to be in motion if its position in relation to its surroundings changes in a given time.
- An object is said to be at rest if its position in relation to its surroundings does not change.
- A frame of reference is another object or scene against which we compare the position of an object.
Types of Motion
- There are three types of motion: translatory motion, rotatory motion, and vibratory motion.
Translatory Motion
- A particle in translatory motion moves from one point in space to another.
- This movement may be in a straight line or in a curved path.
- Rectilinear motion is defined as motion along a straight line.
- Curvilinear motion is defined as movement along a curved path.
Rotatory Motion
- The particles of the body describe concentric circles around the axis of motion in rotatory motion.
Vibratory Motion
- Particles in vibratory motion move back and forth around a fixed point.
Distance and Displacement
- The distance traveled by a moving object is the length of the path the object takes.
- The measure of distance is a scalar quantity.
- The meter is the SI unit of distance.
- Displacement is the shortest path covered by a moving object in a specified direction from the point of reference (the initial position of the body).
- Displacement is a vector, which means that it is represented by a number with appropriate units and direction.
- The meter is the SI unit of displacement.
Calculating Displacement
- Displacement can be calculated using the formula: xf - xi, where xf is the final position and xi is the initial position.
- Displacement can also be calculated using Pythagoras' theorem in certain cases.
Examples of Displacement
- Case 1: If the object is traveling from +1 to +4, then displacement = +3.
- Case 2: If the object is traveling from -3 to -1, then displacement = +2.
- Case 3: If the object is traveling from +4 to +2, then displacement = -2.
- Case 4: If the object follows a path, the final and initial positions can be used to calculate the displacement.
Determine the state of an object based on its position in relation to its surroundings. Learn about frames of reference and compare positions.
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