Question

A car moving with an intial velocity of 25m/s his brought to rest in 20s calculate he acceleration

Answer 1

Given:- u=25m/s
v=0m/s
t= 20sec
To find :- a
Solution :- a = (v-u)/t
= (0 - 25 )/ 20
= -25/20
= -1.25m/s2

Answer 2

hello there!!!!

Initial velocity of the object,u = 25m/s
final velocity of the object ,v= 0
Time taken = 20s


Now,
As we know that v-u= at
0 - 25 = a × 20
a= -25 / 20 = -5/4


hope it helps you