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Find the speed of the golf ball immediately after impact?
High-speed stroboscopic photographs show that the head of a 206 g golf club is traveling at 45.1 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 30.9 m/s. Find the speed of the golf ball immediately after impact. Answer in units of m/s.
conservation of momentum,
ΔP = 0
(m_club)(v_club) - (m_club)(v_club)' - (m_ball)(v_ball)' = 0
(0.206)(45.1) - (0.206)(30.9) - (0.0459)(v_ball)' = 0
v_ball' = 63.7298 m/s
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