An inclined plane makes an angle of 30 degee with the horizontal. (Static friction coefficent of the inclined surface is 0.4 and the kinetic friction coefficent is 0.1)  A block which weighs 1 kg must pass through a gate at the bottom of the incline with a velocity of 3.0 m/s. At what distance along the incline must you realease the block?

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.