Question

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

Answer 1

Answer: initial velocity is 25 m/s.

Explanation:

u= ?

t= 10 sec

a= -2.5 m/s

v= 0 ( as brakes are applied so car is at rest)

v = u+ at

0= u + (-2.5)*10

u= 25 m/ s

Answer 2

Answer:

Explanation:

Retardation which is -a = 2.5m/s^2

Therefore a = -2.5 m/s^2