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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
A bullet initially moving with a velocity 20 m/s strikes a target and comes to rest after penetrating a distance 10 cm into the target. Calculate the retardation caused by the target.
The acceleration of a moving body is constant in magnitude and direction. Must the path of the body be a straight line?
If not, given an example.
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
Sketch the shape of the velocity-time graph for a body moving with:
Uniform acceleration.
Correct your friend who says that acceleration gives the idea of how fast the position changes.
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
What do you understand about negative acceleration?
What is meant by negative acceleration?
An object can be moving with uniform speed but with variable acceleration.
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
