Glider A of mass of 1 kg and speed 1 m/s on a friction-free air track collides with a 5-kg glider B at rest. For an inelastic collision the combined-glider speed will be
A. 1/5 m/s.
B. 1/4 m/s.
C. 1/6 m/s.
D. 1 m/s.
Answer: C
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