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27 February, 19:08

What is the gravitational potential energy of a ball of mass 2.00 kg which is tossed to a height of 13.0 m above the ground? Answer in J, taking the potential energy to be 0.00 J at the ground.

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  1. 27 February, 19:36
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    I believe the answer is 254.8 J, or rounded 255 J.

    Explanation:

    The formula for potential energy is:

    PE=m (h) g

    This means the mass (m) times height (h) times gravity (m). Gravity is 9.8 m/s (meters per second). Putting all of the numbers into it would equal:

    PE=2 (13) 9.8

    This equals 254.8 exactly, or if the assignment calls for you to round, 255.
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