Two workers move a box across a horizontal, frictionless surface using two ropes attached to the box. Worker 1 pushes a force of 60N with 8 = 45 and worker 2 pulls with a force of 5ON at an angle @ = 30. If the box moves 10m to the right (+x), how much work is done on the box by each worker? Worker 1 Worker 2 +433 J -125 J +433 J +217 J -250 J -125) +424 J +433 J -424 J +433 J mOoOODp D> Question 10: Lowering a book | lower a book of mass m downward a distance h at constant speed v. The work done by the force of my hand on the book is A. Negative B. Zero C. Positive D. Impossible to tell Question 11 A ramp is 5 m long leads to a platform that is 4 m high. Student A pushes a 10kg box up the ramp at constant speed. Student B lifts the box directly up (from ground to the platform) at constant speed. How does work done by student A compare to the work done by student B? The ramp is frictionless. If both boxes are moved at a steady 1m/s what is the rate of work done by student A? A. 98W B. -98 W C. 78W D. -78 W A dy : E