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sktgurl930
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Homework Statement
A 15 g ball is fired horizontally with speed v0 toward a 117 g ball hanging motionless from a 1.53-m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 117 g ball swings out to a maximum angle θmax=53°. What was v0?
Homework Equations
h=L(L-cos(theta)
V=Square root of (m*g*h/(.5*M) little m is ball moving and M is the ball not moving
(v2x)f=2m1/m1+m2 (V1x)i
The Attempt at a Solution
Im not sure if I am using the right equations and whether the angle given is the one we use in the equation, or if we have to subtract it from 90 first