Two point masses connected by an ideal string are placed on a smooth horizontal surface as shown in the diagram. A sharp impulse of `"10 kg m s"^(-1)` is given to the 5 kg mass at an angle of `60^(@)` to the line joining the masses. The velocity of the 10 kg mass just after the impulse will be

Options

A. `2/3 ms^(-1)`
B. `1/3 ms^(-1)`
C. `2 ms ^(-1)`
D. zero

Answer

B