An inelastic collision does not conserve kinetic energy, although the total energy is conserved.
1. Which one of the following is characteristic of an inelastic collision?
A) Total mass is not conserved.
B) Total energy is not conserved.
C) Linear momentum is not conserved.
D) Kinetic energy is not conserved.
E) The change in momentum is less than the total impulse.
2. A 1000-kg car traveling east at 20 m/s collides with a 1000-kg car traveling west at 15 m/s. The cars stick together after the collision. What is the common velocity of the cars after the collision?
A) 10 m/s, east
B) 15 m/s, west
C) 2.5 m/s, west
D) 2.5 m/s, east
E) 1.5 m/s, west
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