20 g ball is fired horizontally with initial speed v, toward aI 00 g ball that is
Chapter 10, Problem 71(choose chapter or problem)
20 g ball is fired horizontally with initial speed v, toward aI 00 g ball that is hanging motionless from a 1.0-m-long string.The balls undergo a head-on, perfectly elastic collision, afterwhich the I 00 g ball swings out to a maximum angle Omax = 50.What was v,?
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