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A 12.8 kg tire falls off of a truck at a velocity of 179 m/s and...

A 12.8 kg tire falls off of a truck at a velocity of 179 m/s and hits a 65.0 kg barrel of dill pickles at rest outside a general store in a perfectly elastic collision. What are the velocities of the tire and barrel after they collide?

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Answer #1

using linear momentum conservation

using kinetic energy conservation

from equation (1)

and

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