A 3.0 kg object traveling 6.0 m / s east has a perfectly elastic collision with a 4.0 kg object traveling 8.0 m / s west. After the collision, the 3.0 kg object will travel 10.0 m / s to the west. a) What is the total moment before the collision? b) What is the total momentum of these objects after this collision?

Physics for Scientists and Engineers: Foundations and Connections
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Chapter11: Collisions
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A 3.0 kg object traveling 6.0 m / s east has a perfectly elastic collision with a 4.0 kg object traveling 8.0 m / s west. After the collision, the 3.0 kg object will travel 10.0 m / s to the west.
a) What is the total moment before the collision?

b) What is the total momentum of these objects after this collision?

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