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26 August, 21:44

3. A roller coaster car sits at rest at the top of a hill, 23.5 meters tall. What will be the final

velocity of the car at the bottom of the hill?

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Answers (1)
  1. 26 August, 23:56
    0
    21.5 m/s

    Explanation:

    KE at bottom = PE at top

    ½ mv² = mgh

    v = √ (2gh)

    v = √ (2 * 9.8 m/s² * 23.5 m)

    v = 21.5 m/s
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