3. A cart is placed on a level, frictionless surface as shown at right. A hand is pushing the cart to the left and a string is pulling the cart to the right. Frictionless floor a. Consider the following two possible free-body diagrams of the cart. Complete the table below for each case. ii. Free-body diagram by hand on cart FT by string on cart by hand on cart FT by string on cart Initial direction of motion Subsequent motion of the cart (e.g., speeding up / slowing down etc.) At rest A+ To the right At rest ii. To the right SPeek To the left Direction of acceleration Direction of net force 0 b. Do you agree or disagree with the statement below? Explain. "From a free-body diagram, the direction of motion of an object can be determined." H