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problem05_71

University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.71: a) Forces on you : 2 k k s m 094 . 3 ) cos (sin sin cos gives - = - = = - = = = α α μ α g a ma f α mg ma F mg n ma F x x y y Find your stopping distance ? s, m 20 , s m 094 . 3 , 0 0 0 2 = - = - = = x x v a v x x x m, 64.6 gives ) ( 2 0 0 2 0 2 = - - + = x x x x a v v x x x which is greater than 40 m. You don’t stop before you reach the hole, so you fall into it.
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