Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.
-The increase of potential energy of the box is 100 J.

Question

Quizplus · Accepted Answer

The formula for potential energy (PE) is PE = mgh, where m is the mass of the object (in kilograms), g is the acceleration due to gravity (9.8 m/s^2), and h is the height or elevation (in meters). In this case, the potential energy increase is calculated as PE = 20 * 9.8 * 5 = 980 J. Therefore, the answer is A, as the increase of potential energy is indeed 980 J, not 100 J.

Consider a Situation Where You Carry a 20-N Box Up