A pot falls from a ledge and hits the ground 45 m below. The speed with which it hits the ground is
A) about 120 m/s.
B) about 30 m/s.
C) about 60 m/s.
D) more than 120 m/s.

Question

Quizplus · Accepted Answer

The speed with which the pot hits the ground can be calculated using the formula $v = \sqrt{2gh}$, where $g = 9.8 \, \text{m/s}^2$ is the acceleration due to gravity and $h = 45 \, \text{m}$ is the height. Plugging in the values, we get $v = \sqrt{2 \times 9.8 \times 45} \approx 29.9 \, \text{m/s}$, which is about 30 m/s.

A Pot Falls from a Ledge and Hits the Ground