A hockey puck travelling 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. Angular momentum is also conserved because there are no external torques acting on the system.

A Hockey Puck Travelling at Speed V on Essentially Frictionless