Question

what is acceleration?​

Answer 1

Explanation:

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

Answer:

Acceleration is the rate of change of the velocity of an object with respect to time.

They are vector quantities.