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devlian [24]
3 years ago
14

an apple with the mass of 0.95 kilograms hangs from a tree branch at 3.0 meters above the ground. what is the potential energy?

Physics
1 answer:
Liula [17]3 years ago
8 0
The potential energy is calculated by the formula
E = mgh = 0.95 * 10 * 3 J = 28.5 J
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Answer:

Potential Energy = 294J, Kinetic Engergy = 48.02J

Explanation:

We have these formulas:

Potential Energy = mass * gravitational force * height (m) = 1 * 9.8 * 30 = 294(J)

Kinetic Energy = 1/2 * mass * velocity^2 = 1/2 * 1 * 9.8^2 = 48.02 (J)

As the rock falling at an acceleration of 9.8m/s^2 which means for each second, the rock increases 9.8m/s. I think we are missing time to find the instantaneous velocity, the formula is (initial displacement - final displacement)/ (initial time - final time) which will directly give the final answer for you.

 

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