problem08_72

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

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8.72: a) The stuntman’s speed before the collision is . s / m 9 . 9 2 0s = = gy v The speed after the collision is ( 29 . m/s 3 . 5 m/s 9 . 9 kg 100 . 0 kg 0 . 80 0 v s s = = + = s v m m m v b) Momentum is not conserved during the slide. From the work-energy theorem, the distance x is found from or , total
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Unformatted text preview: k 2 total 2 1 gx m v m = ( 29 ( 29 ( 29 . m 7 . 5 s / m 80 . 9 25 . 2 s / m 28 . 5 2 2 2 k 2 = = = g v x Note that an extra figure was needed for V in part (b) to avoid roundoff error....
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