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collision between to plastic balls

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A 0.208 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.099 kg, which is moving along the same line at a speed of 0.10 m/s.

After the collision, both balls continue moving in the same, original direction, and the speed of the 0.099 kg ball is 0.26 m/s.

What is the new velocity of the first ball? (in m/s in the original direction)

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Solution Preview

Apply the conservation of momentum to solve the question.

before the collision, the total momentum of the two balls is
(.208)(.3)+ ...

Solution Summary

It shows how to find the speed of the ball after it collides with another plastic ball. The solution is detailed and has a '5/5' rating.