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science

Grade6

Easy

Question

Find the potential energy of a body if a body of mass 1 kg is falling from the height of 4 m.

39J
30J
36J
33J

hint Hint:

Potential energy= mass x gravitational acceleration x height.

The correct answer is: 39J

Given,
mass of the object = 1 Kg
Height from which the object is falling = 4 m
According to the formula,
Potential energy= mass x gravitational acceleration x height.
PE = 1 x 9.8 x 4 ( gravitational acceleration = 9.8m/s²)
PE = 39 J

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