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Linear momentum: Find the speed of Superman

Find the speed at which Superman (mass = 89.0 g) must fly head-on into a train (mass = 16405 kg) traveling at 75.0 km/hr to stop it.

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m1*v1 + m2*v2 = m1*v3 + m2*v4
m1 = 16405 Kg
m2 = 89 kg
v1 = 75 km/hr
v2 = ? (it should ...

Solution Summary

With good explanations, the problem is solved.

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