Question

a body has an acceleration of -3 MS square what is its retardation​

Answer 1

Retardation is 3m$s^{-2}$

Explanation:

Acceleration :

rate at which velocity changes with time, in terms of both speed and direction. a point or an object moving in a straight line is accelerated if it speeds up or slows down. motion on a circle is accelerated even if the speed is constant, because the direction is continuously changing.

retardation is the negative acceleration per unit time.

if a body has an acceleration of $-3ms^-{2}$ then the retardation is $+3ms^{-2}$