Thomas was given the following scenario: "A 5N box is pushed across the floor with a force of 7 N. The friction acting on the box is 5 N. Draw a free body diagram and determine the net force acting on the box." Thomas submitted the answer that the net force acting on the box was 7N and he constructed the free-body diagram below. Did Thomas answer the question correctly? Cite your evidence for your answer and explain your reasoning. If he was incorrect state what the correct answer would be and WHY?
