Question

1. determine the amount of gravitational potential energy for a 3 g acorn in an oak tree that is 17 m tall.

50 j
0.5 j
5 j
0.05 j

Explanation:

Step1: Convert mass to kg

$m = 3\ \text{g} = 0.003\ \text{kg}$

Step2: Recall gravitational PE formula

$GPE = mgh$
where $g = 9.8\ \text{m/s}^2$, $h=17\ \text{m}$

Step3: Substitute values and calculate

$GPE = 0.003 \times 9.8 \times 17 \approx 0.5\ \text{J}$

Answer:

0.5 J