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23 November, 21:29

If a car goes along a straight road heading west and speeds up from 25 ft/s to 60 ft/s in 5 s, calculate the acceleration.

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  1. 23 November, 21:43
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    Acceleration =

    (change in speed) / (time for the change)

    and

    direction of the change.

    Change in speed = (end speed) - (start speed) = (60 - 25) = 35 f/s

    Time for the change = 5 sec

    Direction of the change = west

    Acceleration = 7 ft/sec² west.
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