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17-02-2016
Physics

Answered

explain what it means to say that energy is conserved as a ball falls toward the ground.

Verified Answer :

20-02-2016

Assuming no air resistance, as the ball falls, it loses potential energy (U = mgh) but since it increases in speed, it gains kinetic energy. The kinetic energy gain and potential energy loss cancels out, and therefore mechanical energy is conserved.

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