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Question
Explain the following concept in your own words with everyday examples:
Acceleration
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Solution
The rate of change of velocity is known as acceleration. It is a vector quantity.
For example, if a car is moving on a straight with variable speed, it will possess some acceleration. In case the speed of the car remains the same but the direction of the car changes, then also the car would be accelerating.
RELATED QUESTIONS
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
Distinguish between acceleration and retardation.
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 ?
Can you use the relation [B1]?
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The rate of change of velocity is ______.
What do you understand about negative acceleration?
Assertion: Position-time graph of a stationary object is a straight line parallel to the time axis.
Reason: For a stationary object, the position does not change with time.
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When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
