A bumper car with mass m1 = 111 kg is moving tothe right with a velocity of v1 = 4.2 m/s. A secondbumper car with mass m2 = 87 kg is moving to theleft with a velocity of v2 = -3 m/s. The two carshave an elastic collision. Assume the surface is frictionless.
1) What is the velocity of the center of massof the system?
m/s
2) What is the initial velocity of car 1 in thecenter-of-mass reference frame?
m/s
3) What is the final velocity of car 1 in thecenter-of-mass reference frame?
m/s
4) What is the final velocity of car 1 in theground (original) reference frame?
m/s
5) What is the final velocity of car 2 in theground (original) reference frame?
m/s
6) In a new (inelastic) collision, thesame two bumper cars with the same initial velocities now latchtogether as they collide. What is the final speed of the two bumpercars after the collision?
m/s
7) Compare the loss in energy in the twocollisions:
|ΔKEelastic| = |ΔKEinelastic|
|ΔKEelastic| > |ΔKEinelastic|
|ΔKEelastic| < |ΔKEinelastic|
m₁ m2
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