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6 February, 04:52

A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 2.20 m/s. The coefficient of kinetic friction between sled and ice is 0.115. Use energy considerations to find the distance the sled moves before it stops. m

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  1. 6 February, 04:59
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    2.15 m

    Explanation:

    u = 2.2 m/s, v = 0, uk = 0.115

    a = uk x g = 0.115 x 9.8 = 1.127 m/s^2

    Let s be the distance traveled before stopping.

    v^2 = u^2 - 2 a s

    0 = 2.2^2 - 2 x 1.127 x s

    s = 2.15 m
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