Physics, 16.10.2019 01:10 hannahkharel2
Arock is dropped from a distance re above the surface of the earth, and is observed to have kinetic energy k1 when it hits the ground. an identical rock is dropped from twice the height (2re) above the earth’s surface and has kinetic energy k2 when it hits. re is the radius of the earth. what is k2/k1?
Answers: 3
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Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.
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Arock is dropped from a distance re above the surface of the earth, and is observed to have kinetic...
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