Physics, 29.10.2020 19:20 dragongacha777

Which of the following options contain systems that possess both kinetic energy and potential energy?
1. A boy standing on the top of a building.
2. A descending airplane moving with a velocity v.
3. A book placed on the table.
4. An apple on a tree.

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Which of the following options contain systems that possess both kinetic energy and potential energ...