Name: id: a9. which type of friction causes a sky diver's acceleration to change as she falls? (a.) staticc. rollingb. slidingd. fluid10. two forces act on an object. one force has a magnitude of 10 n and is directed toward the north. the otherhas a magnitude of 5 n directed toward the south. the object experiences a net force ofa. 50 n north. c.) 5 n south. b. 5 n north. d. 15 n north. a force that opposes motion between two surfaces that are touching isa. velocity.(c.) friction. b. gravity. d. acceleration.12. one of the largest forces opposing the motion of a car isa. static friction. c. fluid friction.(b.) rolling friction. d. sliding friction.13. rolling frictiona. is the same as fluid friction.(b.) makes it difficult to move objects on wheels. c. is usually greater than sliding friction. d. is usually less than sliding friction.14. a forcea. is a push or a pull. b. can cause an object to speed up, slow down, or change direction.. is expressed in newtons. d. all of the above15. you are on a bus traveling 15 m/s east and you decide to move from the front of the bus to the back walkingat a rate of 1 m/s. your resultant velocity isc. 1 m/s west. a. 15 m/s east. d. 14 m/s east. b. 14 m/s west.16. when velocity decreases, this could be referred to asc.) deceleration. a. negative acceleration. d. all of the aboveb. acceleration.17. an example of acceleration isc. jogging at the same pace. ca a car turning a corner. d. a hovering helicopter. b. bicycling at 40 m/s.18. what is the net force when you combine a force of 7 n north with a force of 5 n south? c. 2 n north(a. 2 n southd. 12 n northb. 12 n southragt19. your class and another class have a tug-of-war contest. for your class to win, your class musta. have a greater force in the same direction as the other class. create a balanced force with the other class. c. create a net force of zero with the other class. d.) have a greater force in the direction opposite the other class. bare these all right?