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?

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative