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At the platform diving in the Olympics, a diver jumps from either a 5 meter, 7.5 meter or 10 meter board. Neglecting air resistance, calculate the diver's speed when she hits the water after diving off the 10 m board.

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KE at end=PE at start
1/2 m vf^2=m g h
vf=sqrt (2gh) g=9.8m/s^2 h=10 m

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