Question

when it's uniform motion then acceleration will be?​

Answer 1

Answer:

The speed is 20 m/s, and the direction is "downward". Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

Answer 2

Explanation:

When a body is moving with a constant velocity, then its acceleration will be zero, because then the change in velocity is zero.