Ans
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The three balls are initially placed at rest. Then all of them are under the effect of same amount of force ( KQ^2/R^2)
We know that F=MA ! Since mass is also same. Accelereation effect is indeed same as well.
Now you can't do momentum conservation because (Velocity being a vector) and we need to resolve it in directions and all. Thus energy conservation is used. Had masses been different so would be velocity.
8 years ago
by
Nachiketa Dev Sharma