A block of mass 1 kg 'is pushed towards ...

A block of mass `1 kg` 'is pushed towards a movable wedge of mass `2 kg` and height `h=30 cm`, with a velocity `u=6 m / s`. Before striking the wedge it travels `2m` on a rough horizontal portion. The velocity is just sufficient for the block to reach the top of the wedge. Assuming all the surfaces are smooth except the given horizontal part and collision of block and wedge is jerkless, the friction coefficient of the rough horizontal part is (Round off the answer to two decimal places)
'(##CEN_KSR_PHY_JEE_C08_E01_015_Q09##)'

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