Question

if a train travelling at 10m/s starts to accelerate at 1m/s^2 for 15s on a straight track, calculate its final speed in m/s

Answer 1

-5 m/s

Step-by-step explanation:

vo = 10 m/s

a = -1 m/s²

t = 15 s

v = vo + at

= 10 + (-1)(15)

= -5 m/s

(actually the train has come to a stop at t = 10s)