posted by colby .
High-speed stroboscopic photographs show
that the head of a 197 g golf club is traveling at 36.8 m/s just before it strikes a 45.9 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 25.9 m/s. Find the speed of the golf ball immediately after impact.
Answer in units of m/s
momentum (m*v) is conserved:
197*36.8 + 45.9*0 = 197*25.9 + 45.9v
v = 46.78