problem08_17

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

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8.17: The change in velocity is the negative of the change in Gretzky’s momentum, divided by the defender’s mass, or s. m 66 . 4 ) s m 0 . 13 s m 50 . 1 ( N 900 N 756 s m 00 . 5 ) ( 1 2 1 2 = - - - = - - = A A B A B B v v m m v v Positive velocities are in Gretzky’s original direction of motion, so the defender has changed direction.
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Unformatted text preview: b) ) ( 2 1 ) ( 2 1 2 1 2 2 2 1 2 2 1 2 B B B A A A v v m v v m K K-+-=- --+-= ) m/s) 5.00 ( m/s) N)((4.66 90 ( ) m/s) . 13 ( m/s) N)((1.50 6 75 ( ) m/s 8 . 9 ( 2 1 2 2 2 2 2 kJ. 8 5 . 6-=...
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