73. Two objects, A and B, with masses of 3.2 kg and 1.8 kg, move on a frictionless horizontal surface. Object A moves to the right at a constant speed of 5.1 m/s while object B moves to the right at a constant speed 1.4 m/s. They collide and stick together (a perfectly inelastic collision).
a. Determine the total momentum of the system (both objects) before the collision
b. Determine the total kinetic energy of the system before the collision
c. *Find the speed of the two objects after the collision
d. *Find the total kinetic energy of the system after the collision.
e. *Is the kinetic energy of the system conserved? Explain.
Answers: 2
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