Physics, 18.12.2020 02:20 gracie0818
11. Which of these is an example of converting gravitational potential energy to kinetic energy?
A. a person running on a level track
B. an apple falling from a tree to the ground
C. a rope spring that makes a toy car move across the ground
D. a rubber band stretches twice as long normal length
Answers: 1
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A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.
Answers: 2
11. Which of these is an example of converting gravitational potential energy to kinetic energy?
A....
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