2. a 4.0 kg ball moving to the right at 1.2 m/s collides inelastically with a 1.0 kg ball at rest. what will the velocity of the combined balls be after the collision?
3. an object is lowered into a deep hole in the ground. how does the potential energy of the object change?
4. a real spring does not oscillate forever. instead, it eventually comes to a stop. does this violate the law of conservation of energy? explain why or why not.
5. a boy can raise a rock that weighs 100 n by using a lever and applying a force of 20 n. what is the mechanical advantage of the lever?
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Physics, 04.08.2019 01:00, carsengilbert
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Physics, 25.11.2019 21:31, ashelygarcia4321
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Physics, 09.12.2019 06:31, rscott2649
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2. a 4.0 kg ball moving to the right at 1.2 m/s collides inelastically with a 1.0 kg ball at rest. w...
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