Question

When do we say the acceleration of a body is zero?

Answer 1

Acceleration is known as the rate of change in velocity. E.g.

If a car is running with a velocity of 6 m/s. and now the driver pushes the car and reaches the speed of 12m/s in 3 seconds.

 Here there is a change in velocity, and so there is acceleration.

Acceleration = (12-6)/3 = 2m/s^2

If the acceleration will be 0 then the change in body will also be 0.

Answer 2

HEY!!

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▶Acceleration is equal to rate of change of velocity.

▶If a body moves with constant velocity (uniform motion), then its acceleration is equal to zero.

▶Example:- A train travelled with a constant velocity of  100 mi/h between two stations.