When a rubber ball is dropped onto a concrete floor, it bounces to a height that is slightly lower than its initial height. Compare the ball’s (a) initial mechanical energy to (b) its energy just before hitting the ground, to (c) the total energy just after bouncing off the ground, and to (d) the total energy when it reaches it final height. Is the ball’s mechanical energy conserved? Explain and discuss using the principle of conservation of total energy.
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