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Statement-1: Twoparticles of mass 1 kg and 3 kg 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 2 m//s, their centre of mass has a velocity of 0.5 m//s. When the relative velocity of approach becomes 3 m//s the velocity of the centre of mass is 0.75 m//s. Statement-2: The total kinetic energy as seen from ground is 1/2muv_(rel)^(2)+1/2mv_(c)^(2) and in absence of external force, total energyremains conserved. |
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Answer» `0.75 MS ^(-1)` |
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