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6 May, 13:18

Forces Unit

Instruction

Active

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.)

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Answers (1)
  1. 6 May, 14:00
    0
    5 m/s (squared)

    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).
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