Question

a moving train is brought to rest within 20 sec by applying brakes . Find the initial velocity ,if the retardation due to brakes is 2 meter per second ​

Answer 1

Answer:

Hey mate here is your answer

Answer 2

Answer:

40m/s

Explanation:

As the body is coming to rest therefore its final velocity (v) would be 0.

Acceleration = -2m/s^2

Time = 20s

v= u + at

0 = u + (-2) (20)

u = 40m/s

Hope it helps you....