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.
- 190J
- 192J
- 196J
- 199J
Hint:
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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