Two particles of masses m and 3 m approach each other with different velocities. After collision, the particle of mass m has velocity v → in their centre of mass frame. Velocity of particle of mass 3 m in the centre of mass frame is

Question

Two particles of masses m and 3 m approach each other with different velocities. After collision, the particle of mass m has velocity v → in their centre of mass frame. Velocity of particle of mass 3 m in the centre of mass frame is, - 2 v →, - v → 2, - v → 3, - v → 4

MARKS App · Accepted Answer

In the centre of mass frame, the total linear momentum of the system is zero. Hence, m v → + 3 m v → ' = 0 or v → ' = - v → 3

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