A horizontal tension force pulls to the right on block A. Block A slides to the right on a horizontal surface that is not frictionless. Block B is stacked on top of block A and the two blocks move together as a unit (block B does not slide on top of block A). Block A is 6 kg and block B is 4 kg. While a 10 N tension force is applied, the blocks slide to the right at constant speed. What is the magnitude of the horizontal force that block A exerts on block B?a. 0Nb. 2Nc. 4Nd. 6Ne. 10NThe tension force is reduced to 5 N and the blocks continue sliding to the right, but they are now slowing down. Which direction is the horizontal force that block B exerts on block A?a. to the left. b. to the right. c. block A exerts no horizontal force on block B. d. the rate at which the blocks are slowing down is needed to determine e. the direction of the horizontal force depends on the speed at which the blocks slide