ignore pencil

C. Block A in the adjacent figure weighs 10 N and block B weighs 30 N. As block B is pulled to the left across a tabletop at a constant speed by T a force F = 12 N, block A is held at rest on top of block B by a tension F T = 3 N. There is friction between all surfaces. The kinetic friction force B exerted on block B by the tabletop has a magnitude of 21 N and its direction is rose (downward / upward / to the left / to the right) as a result of Newton's viol_ law. The normal force exerted on block B by block A has a magnitude of and its direction is _ Pond (downward / upward / to the left / to the right). The normal force exerted on block A by block B has magnitude of 12 N and its direction is (downward / upward / to the left / to the right) because of Newton's Seremd law. (Hint: Draw free-body diagrams for the blocks) FBDB A