Homework Help: Physics

Posted by Angel on Sunday, January 22, 2012 at 5:16pm.

A 1500 kg car traveling at 17.6 m/s to the
south collides with a 5000 kg truck that is
initially at rest at a stoplight. The car and
truck stick together and move together after
the collision.
What is the ﬁnal velocity of the two-vehicle
mass?
Answer in units of m/s

Physics - Damon, Sunday, January 22, 2012 at 5:18pm
momentum before = (1500) 17.6

momentum after = (1500+5000) v

momentum after = momentum before
Physics - Angel, Sunday, January 22, 2012 at 5:18pm
So basically 1500 * 17.6?
Physics - Damon, Sunday, January 22, 2012 at 5:28pm
huh?
(1500)17.6/(1500+5000)
Physics - Damon, Sunday, January 22, 2012 at 5:28pm
when the little car hits the stationary big truck, it slows down.
Physics - Angel, Sunday, January 22, 2012 at 5:34pm
Yes, I got it. Thank you

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