**Answer**:

5488 Joules

**Explanation**:

Use the formula for the potential energy:

**Answer:**

**Explanation:**

The gravitational force between two corpses is given by the following equation:

Where F is the force, G is the gravitational constant

(), M and m are the masses of the corpses and d is the distance between them.

So we have that:

**Answer:**

**1703.24J**

**Explanation:**

**Given parameters: **

Mass of brick = 7.9kg

Height of building = 22m

**Unknown: **

Potential energy of the brick = ?

**Solution: **

The potential energy of a body is the energy at rest of the body. Mathematically;

P.E = mgh

m is the mass of the brick

g is the acceleration due to gravity

h is the height of the building

Insert the given parameters and solve;

P.E = 7.9 x 9.8 x 22 = **1703.24J**