ch09-p019 - 19. (a) The change in kinetic energy is K =...

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19. (a) The change in kinetic energy is () 22 2 2 43 4 111 2100 kg 51 km/h 41 km/h 222 9.66 10 kg km/h 10 m/km 1 h/3600 s 7.5 10 J. fi Km v m v Δ= = (b) The magnitude of the change in velocity is () () ( ) 2 2 41 km/h 51 km/h 65.4 km/h if vv v Δ= − + = − + = G so the magnitude of the change in momentum is ΔΔ G G pmv == F H G I K J 2100
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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