Question

A skier IS skiing down a slope on the mountain.

Is the mechanical energy conserved? Why or why not?

Answer 1

The mechanical energy is not conserved

Explanation:

Recall that the law of conservation of energy states that in an isolated system (no external forces acting on it), the mechanical energy is conserved.

A skier skiing down a slope is not an isolated system in this case because the friction of the snow causes some of the mechanical energy to convert to thermal energy.

Answer 2

The mechanical energy isn't conserved.

Explanation:

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