Question

Find the velocity of a car which is stopped in 10 seconds by applying brakes. The retardation due to brakes is 2.5m/s.

Answer 1

s=ut+1/2 at squre put a _ve

Answer 2

Given:- 1. Retardation= 2•5 m/s^2 = - 2•5
2. time = 10 sec
To find:- velocity of car
solution:- we know
a = v-u÷t
-2•5 = v-0 ÷ 10
-2•5×10= v
v=. -25m/s