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प्रश्न
State the type of motion represented by the following sketches in Figures.
Give an example of each type of motion.
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उत्तर
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Type of Motion:Uniform Acceleration
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The graph shows a straight line with a positive slope, indicating that velocity increases at a constant rate over time.
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This means the object is accelerating uniformly.
Example:
A car increasing its speed steadily on a straight road (e.g., from 0 km/h to 60 km/h in 10 seconds at a constant rate). -
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Type of Motion: Non-Uniform Retardation (Deceleration)
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The graph shows a curved line with a decreasing slope, indicating that velocity is decreasing over time, but not at a constant rate.
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This means the object is slowing down, and the rate of slowing down is changing.
Example:
A bicycle coming to a stop when brakes are applied gently and gradually. -
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संबंधित प्रश्न
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?
A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.
Write the SI unit of retardation.
The speed of a car increases from 10 km/h to 64 km/h in 10 seconds. What will be its acceleration?
Sketch the shape of the velocity-time graph for a body moving with:
Uniform acceleration.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.
Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.
Calculate the acceleration along AB and the retardation along BC.
Negative acceleration is called ______.
If a body starts from rest, what can be said about the acceleration of the body?
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
