Question

A train initially travelling at 30ms^1 decelerates at 4ms^2.
(a) What time will it take to slow to 5m s^1?
(b) What distance will it have travelled when it has slowed to 5ms^1?

Answer 1

v =v₀-at
t=( v₀-v)/a =
s= v₀t - at²/2 =…