Review I V Part A Constants Find the magnitude of the horizontal force F necessary to drag block B to the left at a constant speed of 9.50 cm/s if A rests on B and moves with it as shown in ( Block A in the figure weighs 1.40 N and block B weighs 2.80 N. The Figure 1) coefficient of kinetic friction between all surfaces is 0.500. Express your answer in newtons. F = 2.10 N Submit Previous Answers Correct Part B Find the magnitude of the horizontal force IF necessary to drag block B to the left at a constant speed of 9.50 cm/s if A is held at rest by a string as shown in ( Figure 2). Express your answer in newtons. F = 2.80 N Submit Previous Answers Correct Part C Figure