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9 August, 09:48

A pendulum of mass 0.8 kg has 20 joules of potential energy at the top of its path. It's kinetic energy at the bottom of its swing is:

A. 80J

B. 20J

C. 40J

D. 10J

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Answers (2)
  1. 9 August, 10:38
    0
    20 joules
  2. 9 August, 12:32
    0
    Answer:20joules

    Explanation:

    The kinetic energy at the bottom of the pendulum is 20joules because energy is not created nor destroyed, it only change forms
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