Physics
posted by Angel .
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 twovehicle
mass?
Answer in units of m/s

momentum before = (1500) 17.6
momentum after = (1500+5000) v
momentum after = momentum before 
So basically 1500 * 17.6?

huh?
(1500)17.6/(1500+5000) 
when the little car hits the stationary big truck, it slows down.

Yes, I got it. Thank you