science
Grade6
Easy

Question

Find the potential energy if the body has a mass of 1 kg and falls from a height of 20 m.

  1. 190J
  2. 192J
  3. 196J
  4. 199J

hintHint:

  Potential energy= mass x gravitational acceleration x height

The correct answer is: 196J


    Given, 
    mass of the object = 1 Kg
    Height from which the object is falling = 20 m
    According to the formula,
      Potential energy= mass x gravitational acceleration x height.
    PE = 1 x 9.8 x 20  ( gravitational acceleration = 9.8m/s2)
    PE = 196 J

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