Homework Help: Khudu secondary

Posted by Antony on Sunday, March 10, 2013 at 8:02am.

Car A of mass 1 000 kg,stationary at a traffic light,is hit from behind by car B of mass 1 200 kg,traveling at 18 m.s-1. Immediately after the collision car A moves forward at 12 m.s-1.

1. Assume that linear momentum is conserved during this collision. Calculate the speed of car B immediately after the collision.
2. Modern cars are designed to crumple partially on impact. Explain why the assumption made in the first question may not be valid in this case.

??? - Writeacher, Sunday, March 10, 2013 at 8:37am
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