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On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.
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a piston in a heat engine does 600 j of work, and 1,700 j of heat are added to the syste...
a piston in a heat engine does 600 j of work, and 1,700 j of heat are added to the syste...
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