Homework Help: Don't get scared when you hear the word Physics!

Posted by Just help please. Homework due in 4 hours on Thursday, January 17, 2013 at 8:29pm.

A 1500 kg car traveling at 16.0 m/s to the
south collides with a 5100 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 - drwls, Thursday, January 17, 2013 at 8:46pm
The direction of the car&truck, stuck together, remains south.

For the final speed Vf, use the conservation of momentum law

Initial momentum = Final momentum
1500*16.0 = 6600*Vf

Vf = 3.63 m/s
Don't get scared when you hear the word Physics! - Just help please. Homework due in 4 hours, Thursday, January 17, 2013 at 9:35pm
thank you.

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