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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
Define acceleration. State its unit.
A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.
A racing car is moving with a velocity of 50 m/s. On
applying brakes, it is uniformly retarded and comes to rest in 20 seconds. Calculate its acceleration.
What is the SI unit of acceleration?
Is it possible for an accelerating body to have constant speed?
Convert the following acceleration:
1/36 m/s2 into km/h2
Exercise Problem.
A racing car has a uniform acceleration of 4 ms–2. What distance it covers in 10 s after the start?
When a body starts from rest, the acceleration of the body after 2 seconds in ______ of its displacement.
A bus accelerating with 4ms-2 changes its speed from 60ms_1 to a certain value in 5s. The final speed is ______.
It is possible to have objects moving with uniform speed but variable acceleration.
