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19 October, 11:11

Mark has a mass of 55 kg and climbs up a short, steep trailbof length 300 m to reach the top of a 100 m tall cliff. Matthew, his twin brother, walks up a gentle, winding trail of length 5000 m to reach the top of the same cliff. What is the potential energy of each boy at the top?

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  1. 19 October, 11:16
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    This is slightly a trick question.

    Potential energy = Mass x gravity x height.

    The problem gives us the mass (55kg) and his twin brother we can assume has the same mass (55kg).

    It also gives us the height (100m) and acceleration from gravity = 9.81m/s
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