The potential energy of an object with a mass of 5kg that is placed 20 meters above the surface of the earth is most nearly _________.
981 Joules.
345 Joules.
245 Joules.
490 Joules.
Detailed Explanation
The potential energy of an object is equal to Ep = mgh, where m is the mass, g is the gravitational acceleration constant, and h is the height.
The gravitational acceleration is \(9.81 m/s^2\). As a result, we can calculate the potential energy to be:
\(Ep = 5kg × 9.81 m/s^2 × 20m = 981\) Joules.
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