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A box of mass 10 kg is released from rest at point A, the top of...

A box of mass 10 kg is released from rest at point A, the top of a long frictionless slide.Point A is 20 meters above the level of points B and C is not. THe coefficient of kinetic friction between the box and this surface is uk and horizontal distance between Point B and C is 25 meters

A)Find The speed of the box when its height above point B is 10 meters

B) With respect to part A, find the peed of the box when it reaches point B

C) with respect to part A ,Determine the value of Uk ,so that the box comes to rest at point C

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