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23 October, 14:41

A box has a mass of 5.8kg. The box is lifted from the garage floor and placed on a shelf 2.5m off the ground. How much gravitational potential energy does the box have before it falls off the shelf?

A. 142.1 m/s

B. 14.5 J

C. 142.1 J

D. 18.13 J

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Answers (1)
  1. 23 October, 17:41
    0
    Gravitational potential energy =

    (mass) x (gravity) x (height)

    = (5.8 kg) x (9.8 m/s²) x (2.5 m)

    = 142.1 Joules (C)
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