A classmate describes a trick he saw using Newton's cradle. He pulled back two of the cradle balls and let them swing down to strike the line of other balls. He then saw three balls
swing away on the other side with the same speed as the first two balls. The three balls only rose to 2/3 of the original height. Explain what must be wrong with your classmate's
description.
Answers: 1
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A classmate describes a trick he saw using Newton's cradle. He pulled back two of the cradle balls a...
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