Question

Question 18

0/1 pts
What is the mass of a rock at a height of 12 meters if the potential energy is
650 J?

Answer 1

5.5 kg

Step-by-step explanation:

The gravitational potential energy of an object is given by

`U=mgh`

where

m is its mass

g is the acceleration of gravity

h is the height of the object above the ground

For the rock in the problem, we know:

h = 12 m is the height above the ground

U = 650 J

g = 9.8 m/s^2

Therefore, we can solve the equation for m, the mass of the rock:

`m=(U)/(gh)=(650)/((9.8)(12))=5.5 kg`