Collision Energy and Momentum
A 2.0 kg object traveling at 4.0 m/s collides with a 3.0 kg object initially at rest. After the collision, the 2.0 kg object moves at 1.0 m/s in the direction opposite its initial motion. The total kinetic energy of the system before the collision is 16 J. Which of the following statements best describes this collision?
A
Perfectly elastic with momentum but not energy conserved
B
Inelastic, with 17.7 J of kinetic energy after collision
C
Completely inelastic, with 5.3 J after collision
D
Elastic, with 16 J of kinetic energy after collision
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