Question

A body moving with a velocity of 10 m/s comes to rest
in 5 sec. What is its retardation?​

Answer 1

Answer: u=10m/s

v=0

t=2sec

a=?

We can use the first equation of motion

v=u+at

a= (v-u)/t

a= -10/2

a= -5m/s^2

So retardation is 5m/s^2

                                  Hope this will help you friend!!!