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AP® Physics 1 & 2

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Momentum Race

APPH12-E81ZOJ

Stephanie and Jeff are engaged in a heated battle, as one tends to be when discussing the wonderful world of physics, and decide to settle the debate through a race.

They are arguing over who has the greatest change in momentum during the first few seconds of the race. Stephanie hops in her now discontinued Saturn Ion (mass = 1000 kg) and Jeff hops in his slightly larger Volkswagen Beetle (m = 1150 kg). Both start the race from rest.

Stephanie reaches a top speed of 40 m/s in 6 seconds. Jeff reaches a top speed of 34 m/s in 4 seconds.

Which person had the greatest change in momentum?

Consider magnitude only.

A

Stephanie

B

Jeff

C

Both have the same change in momentum.

D

There is not enough information to determine.