Question 10 (1 point) Suppose this pendulum ball has mass 0.50 kg and the maximum height above the rest position is 0.20 m. What is the kinetic: energy of the ball at this time? (A) 0 none of the above Question 9 (1 point) An airplane flying east experiences forces of lift, drag, weight and thrust as shown in the FBD. What is the net force acting on the airplane? (A) F. = 8000 N F. = 2000 N F. = 5000 N F. = 8000 N 7000 N [E] 3000 N [E] 3000 N [W] 3000 N [UP]Question 13 (1 point) A positively charged cosmic ray approaches Earth's magnetic field as shown. In which direction does the magnetic force acting on the particle point? (A) 0 toward the top of the page 0 toward the bottom of the page 0 outward from the page 0 inward toward the page Question 12 (1 point) A charge is at vertex A of a hexagon ABCDEF. The charge is in an electric eld with uniform strength a. The charge moves from point A to point D. Which path results in the largest change in electric potential energy? A B (A) O All paths have the same change in electric potential energy. Question 8 (1 point) The free-body diagram of a block being pushed up a rough ramp is best represented by (K) A B C D E EN FM FN F F F app app app app app F.. FK F. F. F K OA OB Oc OD OEQuestion 11 (1 point) A toy truck with mass 1.2 kg crashes into a wall with a force of 2.8 x 10 N during a time interval of 0.00018 s. What is the impulse of the crash? (A) 5.0 x 10 ' N . S 2.2 x 10 N .S 3.4 x 10 ' N .S O 6.0 x 10-2 N - S