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AP Physics C: Mechanics/Unit 4 – Linear Momentum
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Center of Mass of an Isolated System

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Two astronauts with masses m₁ = 70 kg and m₂ = 80 kg are initially at rest relative to their spacecraft. The first astronaut pushes the second, acquiring a velocity of 0.5 m/s relative to the spacecraft. What is the displacement of the center of mass of the two-astronaut system, relative to the spacecraft, after 10 seconds?

A

0.5 m

B

2.33 m

C

0 m

D

5 m

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