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AP® Physics C: Mechanics

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Stick is Struck and Slides: What is Conserved?

APPHMC-KX5BMC

A stick is resting on a frozen lake. A piece of clay that is initially sliding across the frozen surface strikes the stick and sticks to it (this is a rather sticky question!) Which quantities are conserved through the collision?

A

Conserved: Angular momentum.
NOT Conserved: Linear momentum and kinetic energy.

B

Conserved: Linear momentum.
NOT Conserved: Angular momentum and kinetic energy.

C

Conserved: Kinetic energy.
NOT Conserved: Angular momentum and linear momentum.

D

Conserved: Angular momentum and linear momentum.
NOT Conserved: Kinetic energy.

E

Conserved: Angular momentum and kinetic energy.
NOT Conserved: Linear momentum.