Question

A ball has a mass of 1.2 kg and is raised to a height of 2 m. How much potential gravitational energy does it have?

Answer 1

Given:

• Mass of ball, m = 1.2 kg

,

• Height, h = 2 m

Let's find the potential gravitational energy of the ball.

To find the potential gravitational energy (PE_G), apply the formula:

`PE_G=m* g* h`

Where:

m is the mass = 1.2 kg

h is the height = 2 m

g is acceleration due to gravity = 9.8 m/s²

Input values into the formula and solve:

`\begin{gathered} PE_G=1.2*9.8*2 \\ \\ PE_G=23.52\text{ J} \end{gathered}`

Therefore, the potential gravitational energy of the ball is 23.52 Joules.

ANSWER:

23.52 J