Homework Help: Physics

Posted by Priyanka on Friday, March 16, 2012 at 9:26pm.

In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.1 m/s and collides with an initially stationary, fully loaded boxcar of mass 4.3m. The two cars couple together upon collision.

(a) What is the speed of the two cars after the collision?

m/s

I believe it's m1(v1)+4.3(1.1)/m1+4.3 but i don't know what m1 and v1 would be?

Physics - Elena, Saturday, March 17, 2012 at 9:19am
m1•v1+ 0 =(m1+m2) •V,
V = m1•v1/(m1+m2) = 1.1•m/5.3m=0.21 m/s
Physics - Priyanka, Saturday, March 17, 2012 at 12:48pm
Thank you!

Answer this Question

Related Questions

Physics - A 24-ton freight car rolls along a straight track with a speed of ...
Physics - A freight car with a mass of 29,000 kg rolls down an inclined track ...
Psychics - A freight car is moving freely along a railroad track at 7.0 m/s and ...
dynamics, check my ans - Three identical train locomotives, on separate tracks, ...
physics - A locomotive is pulling 17 freight cars, each of which is loaded with ...
PHYSICS - A railroad diesel engine weighs 3.9 times as much as a freight car. ...
PHYSICS - A railroad diesel engine weighs 3.9 times as much as a freight car. ...
physics - A train consists of 40 freight cars, each having a mass of 2.71 &...
physics - A train travels 50 km and stops to pick up freight. It then travels ...
physics - A railroad freight car of mass 3.30 104 kg collides with a stationary ...

For Further Reading

First Name:
School Subject:
Answer: