A boulder rolls from the top of a mountain, travels across a valley below, and rolls part way up the ridge on the opposite side.

Question

A boulder rolls from the top of a mountain, travels across a valley below, and rolls part way up the ridge on the opposite side. Describe all the energy transformations taking place during these events and identify when they happen
A. As the boulder rolls down the mountainside, KE is converted to PE. As
the boulder rolls up the opposite slope, KE is converted to PE. The
boulder rolls only part way up the ridge because some of the PE has
been converted to thermal energy due to friction.
B. As the boulder rolls down the mountainside, KE is converted to PE. As
the boulder rolls up the opposite slope, PE is converted to KE. The
boulder rolls only part way up the ridge because some of the PE has
been converted to thermal energy due to friction.
C. As the boulder rolls down the mountainside, PE is converted to KE. As
the boulder rolls up the opposite slope, KE is converted to PE. The
boulder rolls only part way up the ridge because some of the PE has
been converted to thermal energy due to friction.
D. As the boulder rolls down the mountainside, PE is converted to KE. As
the boulder rolls up the opposite slope, PE is converted to KE. The
boulder rolls only part way up the ridge because some of the PE has
been converted to thermal energy due to friction.

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A boulder rolls from the top of a mountain, travels across a valley below, and rolls part way up the ridge on the opposite side. Describe all the energy transformations taking place during these events and identify when they happen A C As the boulder rolls