A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
A) momentum is conserved.
B) angular momentum is conserved.
C) energy is conserved.
D) all of the above are conserved.
E) only momentum and angular momentum are conserved.

Question

Quizplus · Accepted Answer

In an elastic collision, both momentum and kinetic energy are conserved. Since there are no external torques acting on the system, angular momentum is also conserved. Therefore, all of the above choices are conserved.

A Hockey Puck Traveling at Speed V on Essentially Frictionless