Question

Find the inital velocity of a car that is stopped in 10secs by applying brakes.The retardation due to brakes in 2.5m/s { s power 2}

Answer 1

Answer:

25 is the answer

Explanation:

I hope it will help you.

Answer 2

answer : 25 m/s

explanation:

time(t) = 10

retardation (a)= -2.5 m/s²

final velocity (v) = 0 (because the car is

coming to rest)

initial velocity = u .

using equation of motion no 1,

v = u + at

0 = u + (-2.5*10)

u - (2.5*10) = 0

u - 25 = 0

u = 25

therefore initial velocity of the car is 25 m/s