A 43 gg ball is fired horizontally with an initial speed v0 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 θmax = 52 ∘. What was v0? Express your answer with the appropriate units.

A 43 gg ball is fired horizontally with an initial speed v0 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 θmax = 52 ∘. What was v0? Express your answer with the appropriate units.

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