A semicircular wedge of mass M is placed...

A semicircular wedge of mass M is placed on a horizontal floor. A man of mass m starts moving on wedge from position A with constant speed v relative to the wedge. Initially , both man & wedge were at rest . Neglect the friction between wedge & horizontal surface and man doesn't slips on the wedge while man moves from A to C relative to wedge . The correct statement is

speed of wedge will first increase then decrease

speed of the wedge will remain constant

speed of the wedge first increase up to a maximum value and then remains constant

the wedge doesn't move

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