A boy has a mass of 55 kg. He climbs 10 m up a tree. What is his gravitational potential energy?

Explanation

To find the gravitational potential energy (GPE) of the boy climbing the tree, we can follow these steps:

### Step 1: Identify the formula for gravitational potential energy
The formula for gravitational potential energy is given by:
\[ \text{GPE} = mgh \]
where:
- \( m \) = mass of the object (in kg)
- \( g \) = acceleration due to gravity (approximately \( 9.8 \, \text{m/s}^2 \), but often rounded to \( 10 \, \text{m/s}^2 \) for simplicity)
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