If a glass of water is on a table with a piece of paper under it,it is relatively easy to pull the paper out without disturbing the glass very much if the pull is done very quickly.This is because,with a quick pull:
A)the force on the glass will be less.
B)the momentum of the paper will be greater.
C)the time for the pull will be less.
D)the coefficient of kinetic friction will be less.

Question

Quizplus · Accepted Answer

The key principle here is that by pulling the paper quickly, the time during which the force is applied is reduced, minimizing the chance for the glass to be disturbed significantly. This is not directly about the force being less, the momentum of the paper, or changes in the coefficient of kinetic friction, but rather about the short duration of the applied force.

If a Glass of Water Is on a Table with a Piece