Two students push two identical shopping carts along a rough level surface at constant velocities and argue about who is doing more work. The first student pushes on a cart a distance d with mass m with a hori- zontal force F. The second pushes on a cart a distance 2d with same force Facting at an angle of 60.0° below horizontal. Which of the following is true?
(A) Both students do the same amount of work on their respective carts.
(B) The first student is doing twice as much work on the cart as the second.
(C) The second student is doing twice as much work on the cart as the first.
(D) The second student is doing four times as much work on the cart as the first.
