Questions 9-10: A billiard ball of mass 500 g rolls 250 toward a bumper with an initial velocity of 6 m/s in 200 the -x direction. The graph here shows the x- component of the force exerted on the ball by the 150 bumper during the collision. 100 50 9. What is the impulse exerted on the ball by the F (N) 0 bumper? -50 A. 20 N . S B. 10 N . S -100 C. 5.0 N . S D. ON 'S -150 -200 -250 0 10 20 30 40 50 10. What is the ball's velocity after the collision? t (ms) A. +6 m/s B. +4m/s C. +3 m/s D. Om/s