A particle (A) having charge Q and mass m is at rest and is free to move. Another particle (B) having charge q and mass m is projected from a large distance towards the first particle with speed u. (a) Calculate the least kinetic energy of the system during the subsequent motion. (b) Find the final velocity of both the particles. Consider coulomb force only.

A particle (A) having charge Q and mass m is at rest and is free to mo

1.	A particle (A) having charge Q and mass m is at rest and is free to move. Another particle (B) having charge q and mass m is projected from a large distance towards the first particle with speed u. (a) Calculate the least kinetic energy of the system during the subsequent motion. (b) Find the final velocity of both the particles. Consider coulomb force only.
Answer» Correct Answer - (a). `(1)/(4)m u^(2)` (b). A moves to right with velocity u. B is at rest .

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