Question

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

Answer 1

u=?
t=10s
a= -2.5

v = u + at
v = u + 25
therefore, initial vel = final vel- 25

Answer 2

Answer:

u=?

t=10s

a= -2.5

v = u + at

v = u + 25

therefore, initial vel = final vel- 25