Question

What is the potential energy of a 95 kg rock rolling down a 100 m hill?PE =mgh

Answer 1

ANSWER:

93100 J

STEP-BY-STEP EXPLANATION:

Given:

Mass (m) = 95 kg

Height (h) = 100 m

The acceleration of gravity is equal to 9.8 m/s²

We use the formula for potential energy to calculate it:

$\begin{gathered} PE=m\cdot g\cdot h \\ \\ \text{ We replacing:} \\ \\ PE=95\cdot9.8\cdot100 \\ \\ PE=93100\text{ J} \end{gathered}$

Potential energy is equal to 93100 joules