Question: a 47 g ball is fired horizontally with initial speed...
A 47 g ball is fired horizontally with initial speed v0toward a 110 g ball that is hanging motionless from a 1.1 m -long string. The balls undergo a head-on, perfectly elastic collision, after which the 110 g ball swings out to a maximum angle θmax = 52 ∘
What was v0?
Express your answer using two significant figures.