A train car with mass m1 = 576 kg is moving to the right with aspeed of v1 = 7 m/s and collides with a second train car. The twocars latch together during the collision and then move off to theright at vf = 4.4 m/s.
A)What is the initial momentum of the first train car?
B)What is the mass of the second train car?
C)What is the change in kinetic energy of the two train systemduring the collision?
D)Now the same two cars are involved in a second collision. Thefirst car is again moving to the right with a speed ofv1 = 7 m/s and collides with the second train car thatis now moving to the left with a velocity v2 = -5.1 m/sbefore the collision. The two cars latch together at impact.
What is the final velocity of the two-car system? (A positivevelocity means the two train cars move to the right – a negativevelocity means the two train cars move to the left.)
