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nasty-shy [4]
3 years ago
14

Question 18

Physics
1 answer:
Sedaia [141]3 years ago
3 0

Answer:

5.5 kg

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=\frac{U}{gh}=\frac{650}{(9.8)(12)}=5.5 kg

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