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26 May, 05:41

As she climbs a hill a cyclist slows down from 25mi/hr to 6mi/hr 10 seconds. What is her deceleration?

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  1. 26 May, 06:01
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    1.9mi/hr/s.

    Deceleration is a change in speed over time.

    So the cyclist's deceleration can be broken down by this equation:

    (25-6) / 10 = 1.9 mi/hr/s

    Where what she started at (25m/hr) and what she slowed down to (6mi/hr) are divided by the time it took her to slow down (10 seconds).
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