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(a)Why does the force of gravity do no work on a bowling ball rolling along a...

(a)Why does the force of gravity do no work on a bowling ball rolling along a bowling alley lane? (b) Can an object have mechanical energy without having momentum? Momentum without having mechanical energy? Explain. (c) Why does a satellite in elliptical orbit gain speed as it moves closer to the planet? When is its kinetic energy the greatest? The least? Where is its potential energy greatest? The least? (d) Explain what is meant by saying a thermometer measures its own temperature.

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