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Batman (mass = 105 kg) jumps straight down from a bridge into a boat (mass = 530 kg) in which a criminal is fleeing. The velocity of the boat is initially +15 m/s. What is the velocity of the boat after Batman lands in it?

.5mv squared + mghf = .5mVi squared + Mghi

.5 x 635 x Vf squared = .5 x 530 x 15 squared

= 13.7m/s

.5mv squared + mghf = .5mVi squared + Mghi

.5 x 635 x Vf squared = .5 x 530 x 15 squared

= 13.7m/s

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