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16 April, 17:16

As the shuttle bus comes to a sudden stop to avoid hitting a dog, it accelerates uniformly at - 4.1 m/s^2 as it slows from 9.0 m/s to 0.0 m/s. Find the time interval of acceleration for the bus.

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  1. 16 April, 20:00
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    Acceleration = (change in speed) / (time for the change)

    - 4.1 m/s² = (-9 m/s) / (time for the change)

    Time for the change = (-9 m/s) / (-4.1 m/s²) = 2.2 seconds
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