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17 July, 06:39

A hockey puck sliding at 60.0m/s slows uniformly to 20.0m/s while travelling 800.0m.

a) Determine the acceleration

b) Determine the time it took

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  1. 17 July, 07:41
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    A) - 3.75 meters/second

    A = (20^2-80^2) / (2x800)

    = (400-6400) / 1600

    =-6000/1600

    =-3.75

    B) 16 seconds

    t = (20-80) / -3.75

    =-60/-3.75

    =16
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