Author Question: A crate of grapes lifted 10 meters gains 200 J of potential energy. If the same crate is instead ... (Read 79 times)

jeatrice · **on:** Jul 29, 2018

A crate of grapes lifted 10 meters gains 200 J of potential energy. If the same crate is instead lifted 20 meters, its gain in potential energy 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 2

When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy

A) less than 40 J.
B) more than 40 J.
C) of 40 J.