# Dynamics of Rigid Bodies

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Two cars, A and B, are traveling along the same route. Car A is traveling at 4.5 m/s and has a mass of
1150 kg. Car B is traveling at 6.7 m/s and has a mass of 1300 kg. If car B gently bumps into car A and
their bumpers lock together, what will be their common velocity then?

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