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Question
sphere of mass 2 kg is moving on a frictionless
horizontal table with velocity v. It strikes with a spring
(force constant 1 N/m) and compresses it by 4 m. The
velocity (v) of the sphere is:
(a) 4 m/s
(b) 2 /2 m/s
(c) 2 m/s
(d) /2 m/s
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