Make an Argument: Carlos gets tired of pushing and instead begins to pull with force F pull at an angle to the horizontal. The block slides along the rough horizontal surface at a constant speed. A free-body diagram for the situation is shown below. Blake makes the following claim about the free-body diagram: Blake: “The velocity of the block is constant, so the net force exerted on the block must be zero. Thus, the normal force F N equals the weight F mg , and the force of friction F f equals the applied force F pull .”

What, if anything, is wrong with this statement? If something is wrong, identify it and explain how to correct it. If this statement is correct, explain why. Include laws of physics that is always true and connect the laws of physics to the situation. Thank you so much!