# Linear Momentum and the Collision of two Tennis Balls

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A 0.060 kg tennis ball, moving with a speed of 7.80 m/s has a head-on collision with a 0.086 kg ball initially moving away from it in the same direction at a speed of 3.10 m/s. Assume a perfectly elastic collision and take the initial direction of the balls as positive.

What is the velocity of the tennis ball after the collision?

What is the velocity of the 0.086 kg ball after the collision?

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#### Solution Summary

This complete solution includes simple calculations. The linear momentum and collision of the two tennis balls are determined.

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