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  • Stage 1

    Answer 3 questions correctly in a row.

Shane is practicing tricks on his skateboard. At the bottom of a half-pipe, his speed is 9 meters per second. Shane's mass is 65 kilograms.
Assume that the bottom of the half-pipe is a height of 0 meters. All forces besides gravity can be ignored. If your answer is a decimal, round to the nearest tenth.
What is Shane's gravitational potential energy when he is at a point 3 meters above the bottom of the half-pipe?
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What is Shane's kinetic energy when he is at a point 3 meters above the bottom of the half-pipe?
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