Centre of Mass 1 Question 13

13. Two particles of mass 1kg and 3kg move towards each other under their mutual force of attraction. No other force acts on them. When the relative velocity of approach of the two particles is 2m/s, their centre of mass has a velocity of 0.5m/s. When the relative velocity of approach becomes 3m/s, the velocity of the centre of mass is 0.75m/s.

(1989,2M)

Analytical & Descriptive Questions

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Answer:

Correct Answer: 13. F

Solution:

  1. Since, net force on the system is zero. Velocity of centre of mass will remain constant.


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