Question

find the initial velocity of a car which is stopped in 10 seconds by applying brakes. Retardation due to brakes is 2.5m/s^2​

Answer 1

Given that ,

Final velocity V = 0 m/s ( car stops)

Time = 10 sec

Acceleration (-) = 2.5 m/s

= - 2.5 m/s

V = 0 - (-2.5) ×10

V = 0 + 25

V = 25 m/s

Initial velocity = 25 m/s