Homework Help: physics

Posted by Anonymous on Monday, September 3, 2012 at 8:46pm.

Reckless Rick driving along the road at 90 km/hr bumps into Hapless Harry directly in fornt of him who is driving at 88 km/hr. What is the speed of the collision?

physics - Elena, Tuesday, September 4, 2012 at 11:51am
m1•v1+m1•v2=(m1+m2)•v

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