Emma52658 Emma52658

02-08-2016
Physics

Answered

a railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity?

A2.0 m/s
B0.5 m/s
C60,000 kg-m/s
D1.0 m/s

Verified Answer :

Distasion Distasion

02-08-2016

DIt is the same energy but now pushing twice as much, so it would be half as fast so 1 m/s

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