ch08-p074 - 74. (a) The initial kinetic energy is Ki = 1 2...

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(d) The potential energy there is UU U fi =+ = Δ 675 .J . (e) If U f = 0, then U if =− = Δ . (f) Since mg y U Δ=Δ , we obtain 0.459 m y Δ= . 74. (a) The initial kinetic energy is K i == 1 2 2 15 3 .. b gb g J. (b) The work of gravity is the negative of its change in potential energy. At the highest
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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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