A 3-kg object moving to the right on a frictionless
Chapter , Problem 8(choose chapter or problem)
A 3-kg object moving to the right on a frictionless horizontal surface with a speed of 2 m/s collides head on and sticks to a 2-kg object that is initially moving to the left with a speed of 4 m/s. After the collision, which statement is true? (a) the kinetic energy of the system is 20 J, (b) the momentum of the system is 14 kg ? m/s, (c) the kinetic energy of the system is greater than 5 J but less than 20 J, (d) the momentum of the system is 22 kg ? m/s, (e) the momentum of the system is less than the momentum of the system before the collision.
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