Question

Forces Unit

Instruction
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Calculating Acceleration of a Train
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? (Round your answer to
the nearest whole number.)

Answer 1

correct edge 2020

Step-by-step explanation:

Answer 2

5 m/s (squared)

Step-by-step explanation:

a= change in velocity/time

since the train must travel at 5m/s

then u= 5m/s, v=45m/s, t=8sec

a=v-u/t

a=45-5=40/8

a=5m/s (squared).