Author Question: An object lifted 10 m gains a certain amount of potential energy. If it is lifted 20 m, its gain in ... (Read 81 times)

arivle123 · **on:** Jul 29, 2018

An object lifted 10 m gains a certain amount of potential energy. If it is lifted 20 m, its gain in potential energy is

A) less.
B) the same.
C) twice as much.
D) four times as much.
E) more than four times as much.

Question 2

When an apple falls to the ground, momentum is transferred to the ground. The momentum absorbed by the ground is

A) negligible compared to the momentum of the apple.
B) greater if the apple bounces.
C) greater than that of the apple whether or not bouncing occurs.
D) none of the above