The coefficient of kinetic friction µk between two surfaces is not strictly independent of the velocity of the object. A possible expression for µk for wood on wood is expressed by equation 2
where v is in m/s. A wooden block of mass 8.0 kg is at rest on a wooden floor, a constant horizontal force of 41 N acts on the block. Use numerical integration to determine and graph a) the block’s speed and b) its position as of the block and b) its position as a function of time from t = 0 to t = 5.0s. c) Determine the percentage difference for the velocity and position at 5.0s, if µk is constant and equal to 0.20.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p