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Two blocks of masses 10 kg and 4 kg are ...

Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 14 m/s to the heavier block in the direction of the lighter block. The velocity of the centre of the mass is

A

30m/s

B

20 m/s

C

10 m/s

D

5 m/s

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