Question

what is meant by acceleration

Answer 1

rate of change of velocity is called acceleration

Answer 2

HELLO !!

HERE IS YOUR ANSWER,

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Acceleration of a body is defined as the rate of change of its velocity with time.

i.e Acceleration = Change in velocity/Time taken for change

or a=(v-u)/t

SI unit is m/s^2.
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Hope it helps u !!

☺☺