A 20 g ball is fired horizontally with initial speed vi
Chapter 10, Problem 65GP(choose chapter or problem)
Problem 65GP
A 20 g ball is fired horizontally with initial speed vi toward a 100 g ball that is hanging motionless from a 1.0-m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 100 g ball swings out to a maximum angle . What was vi?
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