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AP® Physics C: Mechanics

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Moderate

Struck Rod: Elements Conserved Through a Collision

APPHMC-D$5YSW

A rod is hanging straight down from a pivot point at the top. A piece of clay that is initially moving horizontally strikes the rod and sticks to it.

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: Linear momentum and angular momentum

D

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

E

Conserved: Linear momentum and angular momentum.
Not Conserved: Kinetic energy.