Question

define acceleration. State it's SI unit

please answer should be according to class 9
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Answer 1

Answer:

The rate of change of velocity is called acceleration.SI unit is m/s^2

Explanation:

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Answer 2

Acceleration:-The change in velocity for a moving body per unit time is called it's acceleration

Formula:-Change in velocity/Time interval

For example the velocity of a car is u at an instant of time t1,and the velocity is v at later instant of time t2.

The duration of time=t2-t1=t

Change in velocity=Final velocity-Initial velocity=v-u

Acceleration= a=v-u/t

Unit:- The S.I. unit of acceleration is m/s².

Other units are cm/s² or km/h².