A stone thrown from the surface of the earth at a speed of 10 m / s at the top of the trajectory had a potential energy of 5 J
| December 5, 2020 | education
A stone thrown from the surface of the earth at a speed of 10 m / s at the top of the trajectory had a potential energy of 5 J. Determine the mass of the stone.
Given:
E = 5
V = 10
g = 10
To find:
m-?
h-?
Decision:
From the formula for potential energy E = mgh it follows that:
h = V2 / 2g = 100/2 * 10 = 20m
m = E / gh
m = 5/5 * 10 = 0.1kg
Answer: 0.1kg
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