A 1.5 kg block sliding on a rough horizontal surface (coefficient of friction of 0.34) is attached to one end of a horizontal spring (k = 200 N/m) which has its other end fixed. If this system is displaced 0.20 m horizontally from the equilibrium position and released from rest, how fast is the block moving when it passes the equilibrium position for the first time?

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