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Ankita Babu
Asked: 2022-11-01T16:56:15+05:30 In:

Two bodies of different masses `2kg` and `4kg` are moving with velocities `2m//s` and `10m//s` towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is
A. `5 ms^(-1)`
B. `6 ms^(-1)`
C. `8 ms^(-1)`
D. zero

Two bodies of different masses `2kg` and `4kg` are moving with velocities `2m//s` and `10m//s` towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is
A. `5 ms^(-1)`
B. `6 ms^(-1)`
C. `8 ms^(-1)`
D. zero
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1 Answer

  1. Correct Answer – D
    `v_(cm)=(m_(1)v_(1)+m_(2)v_(2))/(m_(1)+m_(2))`, Internal force does not change the position of centre of mass

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