Question

2. A brick is sitting on a building 22 m high. It has a mass of 7.9 kg. What amount of potential

energy does it have?
F:
R:
G:
S:

Answer 1

1703.24J

Step-by-step 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