Homework Help: Physics

Posted by Nicola on Monday, February 4, 2013 at 10:59pm.

A 20.0 g toy car moving to the right at 21.0 cm/s has a head-on collision with a 34.0 g toy car moving in the opposite direction at 47.0 cm/s. If they begin 396.0 cm apart, how long does it take the cars to collide?

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