a train moving with a velocity of 20 m s is brought to rest by applying brakes in 5 s calculate the retardation
Given,
u = 20m/s
v = 0m/s
t = 5s
Using , v = u + at
=> 0 = 20 + a*5
=> a = -20/5 = - 4 m/s2
So, retardation of train = 4m/s2
A moving train is brought to rest within 20 seconds by applying brakes. Find the initial velocity, if the retardation due to brakes is 2 m/s2.
A train is moving with a velocity of 90 km h−1.It is brought to stop by applying the brakes which produce a retardation of 0.5 m s−2.Find:(i) the velocity after 10 s, and (ii) the time taken by the train to come to rest.