Physics, 08.03.2021 23:20 tipbri6380

A railroad flatcar of mass 3,000 kilograms rolls to the right at 10 meters per second and collides with a flatcar of mass 2,000 kilograms that is rolling to the left at 5 meters per
second. The flatcars couple together. Their speed after the collision is

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A railroad flatcar of mass 3,000 kilograms rolls to the right at 10 meters per second and collides...