# physics

A truck of mass 1.0 tonne moving at 4.0 m/s catches up and collides with a truck of mass 2.0 tonne moving at 3.0m/s in the same direction. The trucks become coupled together. Calculate their common velocity

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1. use the conservation of momentum

m1v1+m2v2=(m1+m2)vfinal

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2. 17m/s

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posted by jossiah

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