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7 March, 20:23

A one-kilogram plate on a shelf has 19.6 J of potential energy. If the plate falls from the shelf, what will its maximum velocity be?

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Answers (2)
  1. 7 March, 20:30
    0
    (1/2) m v^2 = 19.6

    .5 * 1 * v^2 = 19.6
  2. 7 March, 20:33
    0
    There are plenty methos, I'll do it like this.

    We know that:

    Epg=mgh

    Work for h:

    h = (Epg) / mg

    h = (19,6J) / 1kg*9,8m/s²

    h=2m

    Now, we know that:

    v=√2gh

    v=√2*9,8m/s²*2m

    v=6,26m/s
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