PHYS PROB?

Posted on 2016-05-16 18:44:00 in Physics by MOLLY

a 4kg wooden block is pulled across a laminate table by a horizontal force of 30 N and experiences a kinetic friction force of a magnitude of some, as yet, unknown amount. THE COEFFICIENT OF KINETIC FRICTION IS 0.5. how would I label the kinetic friction on a free body diagram? 
Update: what is the force of kinetic friction? 
Update 2: what is the net force? 
Update 3: what is the acceleration? 
Update 4: is the block speeding up or slowing down?

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