Question

Name the physical quantity which defines the decrease in velocity with respect to time

Answer 1

Answer

The physical quantity which defines the decrease in velocity with respect to time is retardation.

Let us first understand what is acceleration :-

Acceleration is the rate of change of velocity per unit time.

$\boxed{\sf a = \dfrac{v-u}{t}}$

• When the velocity increases with respect to time, the acceleration increases.

• When the velocity decreases with respect to time, the acceleration decreases.

The decrease in acceleration is called as retardation.