a freight train is moving at 13.5 m/s and accelerates at 2.50 m/s^2 and later is going at 39.0 m/s. how long is the train accelerating?

Answer 1

A freight train is moving at 13.5 m/s and accelerates at 2.50 m/s² and later is going at 39.0 m/s. how long is the train accelerating?

Step #1: Rearrange acceleration = Δvelocity/time, → time = Δvelocity/acceleration

t = Δv/a

t = (39.0 m/s-13.5 m/s)/(2.50 m/s²)

t = 10.2 seconds