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17 March, 21:25

If a roller coaster has the potential energy of 250 Joules right before it plunges down the track, what is its potential energy half way through the run?

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  1. 17 March, 21:55
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    130 joules.

    Step-by-step explanation:

    Potential energy at height h = mgh where m = mass, g = acceleration due to gravity.

    At the halfway mark the where the height is h/2 then the potential energy is 1/2 * 260 = 130 joules.
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