Question

Until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track, it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train?

______ m/s2

Answer 1

Answer: accelration=changespeed/changetime

changetime=8

changespeed=45-5=40

40/8=5

5m/s^2 is acceleration

Step-by-step explanation:

Answer 2

accelration=changespeed/changetime
changetime=8
changespeed=45-5=40
40/8=5

5m/s^2 is acceleration