A particle was subjected to a force F that varies with position as described by the F. vs. x graph below. How much work was done by the force on the body as it moves from x = 0 to x = 10.0 m? (Ans: 22.5 J) 4.00 3.00 F,N 2.00 1.00 0.00 0.0 5.0 10.0 15.0 S, m

Before railroads were invented, goods often traveled along canals, with mules pulling barges from the bank. If a mule is exerting a 1200 N force for 10 km, and the rope connecting the mule to the barge is at a 20 degree angle from the direction of travel, how much work did the mule do on the barge?  a. 12 MJ b. 11 MJ c. 4.1 MJ d. 6 MJ

7. A 1650 kg car accelerates up a hill by applying a force of 4.61 × 10³ N parallel to the hill. The hill is at an incline of 13°. m 2016 d = 17 m 13° A. What is the net work done on the car as it travels 17 m up the hill? (Hint: calculate the work done by each force in the system. There are 3 forces. The net work is the sum of the works done by each individual force.) b. What is the change in kinetic energy for the car? at the bottom of the hill. How fast is it moving at the top The car is travelling at a speed of 16 of the hill? I= c) 74°F

0 Question 3 A block of mass m = 1 kg is sliding on a horizontal surface with initial velocity vo = 2 m/s. The block is brought to a stop by kinetic friction in a distance of 4 m. What is the work done by the force of friction acting on the block? 2J O-0.5 J O-2 J 08 J 0.5 J O-8 J 1 pts Question 4 1 pts

The following graphs give information about a force being applied to move an object. 1. Which force does the most amount of work? 2. Which force does the least amount of work? 5.0 5.0 4.0 4.0 3.0 F1 (N) F3 3.0 2.0 (N) 1.0 1.0 2 3 4 5 6 7 8 1 2 3 4 5 6 7 89 x (m) x (m) 5.0 5.0 4.0 4.0 3.0 F4 3.0 F2 (N) (N) 2.0 2.0 1.0 1.0 2 3 4 5 6 7 8 9 5 6 7 8 9 4 x (m) x (m)