Question

A 75kg teenager jumps off of the diving board 7.5 m high. What was his potential energy?

Answer 1

The potential energy of an object is given by:

`PE=mgh`

Where m is the mass (in kg), g is the gravity acceleration (in m/s²) and h is the height (in m).

So, calculating the potential energy with m = 75 kg, h = 7.5 m and g = 9.8 m/s², we have:

`\begin{gathered} PE=75\cdot7.5\cdot9.8\\ \\ PE=5512.5\text{ J} \end{gathered}`