Question

____ is the rate of change in velocity.

Answer 1

The answer is acceleration

Answer 2

Answer : Acceleration is the rate of change in velocity.

Explanation :

Acceleration : It is defined as the rate of change in the velocity per unit time. Acceleration is a vector quantity that means it depends on the magnitude and the direction of an object. The S.I unit of acceleration is, $m/s^2$

The formula of acceleration will be,

$Acceleration=\frac{\text{Change in velocity}}{\text{Time taken}}\\\\a=\frac{v_{final}-v_{initial}}{t}$

Hence, acceleration is the rate of change in velocity.