An object lifted 10 meters gains 200 J of potential energy.If the same object is lifted 20 meters,its potential energy gain is
A)half as much.
B)the same.
C)twice as much.
D)four times as much.
E)more than four times as much.

Question

Quizplus · Accepted Answer

The potential energy gained by an object is directly proportional to the height it is lifted. This means that if the height is doubled, the potential energy gained is also doubled. Therefore, if the object gains 200 J of potential energy at 10 meters, it will gain 400 J of potential energy at 20 meters. That is twice as much as the initial potential energy gained at 10 meters. Therefore, the correct choice is C) twice as much.

An Object Lifted 10 Meters Gains 200 J of Potential