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:

### 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/s^{2})

PE = 39 J

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