A mass of 2 kg traveling at 3 m/s undergoes a one-dimensional elastic collision with a group of four 1-kg masses that are at rest in contact with each other and lined up in the same direction as the velocity of the 2-kg mass.
As a result of the collision A)
the 2-kg mass comes to a stop and one of the 1-kg masses takes off at 6 m/s.
B)
the 2-kg mass comes to a stop and two of the 1-kg masses take off at 3 m/s.
C)
the 2-kg mass comes to a stop and three of the 1-kg masses take off at 2 m/s.
D)
the 2-kg mass comes to a stop and all four of the 1-kg masses take off at 2 m/s.
E)
the 2-kg mass and the five other masses travel at 1 m/s.
Question 2
A fusion reaction releases energy because the binding energy of the resulting nucleus
A) is less than the binding energy of the original nuclei.
B) is absorbed in the process.
C) is equal to the binding energy of the original nuclei.
D) is greater than the binding energy of the original nuclei.
E) is released in the process.
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