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Some sliding rocks approach the base of a hill with a speed of 18.0 . The hill rises at 41.0 above the horizontal and has coefficients of kinetic and static friction of 0.420 and 0.570, respectively, with these rocks. Start each part of your solution to this problem with a free-body diagram. Find the acceleration as they slide up the hill.

  • physics -

    a= 9.8(sin41+0.42cos41)
    a= 9.54m/s^2

    Well, it's just my suggestion.

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