Question

the driver of a train travelling at a 40m s-1 applies the brakes as the train enters a station. the train slows down at a rate of 2m s-2 the platform is 400m long will the stop in time​

Answer 1

Answer:

the driver of train at 40 ms-1

the answer is 4 Ms _1

Answer 2

Answer:

V = U - at

finally train stop so V = 0

so U = at

t = 40/2 = 20 sec