Question

the driver of the train travelling at 40m/s applies break as the train enters the station the train slow down at a rate of 2km/s square.the platform is 400m long.how long will the train take to slow down to rest?

Answer 1

a = 2m/s^2 ?.

t = (Vf - Vo) / a,
t = (0 - 40) / -2 = 20s.

Answer 2

Same
as Henry

Answer 3

Answer