This graph shows the motion of a runner. A bicyclist accelerates from a stop to a What is the acceleration of the runner? speed of 12 m/s in 3 seconds. What is her acceleration? Runner's Distance vs. Time F 4 m/s2 G 4 m/s 1,200 H 36 m/52 1 36 m/s 1,000 800 Distance (m 600 400 Quest FINDINGS SC.&.P.13.1, SC.6.P.13. 200 Complete the Quest! 0 Design a way to present your new 1 2 3 4 5 6 7 bumper car design and the results of Time (min) your testing to your class. Be sure to explain how you applied Newton's third F 0 m/min2 law of motion to your design. G 150 m/min Synthesize Information Bumper cars H 150 m/min2 have safety features to protect both the 1 1,000 m/min2 riders and the cars themselves. These features are built around how forces and the laws of motion affect the movement A 1,000-kg car traveling at 15 m/s brakes of the cars. What is another example of to a stop over a distance of 20 m. Suppose how forces and laws of motion impact your the car then speeds up to 30 m/s, and the safety in your daily life? same braking force is used. How far will the car need to stop? Use what you know about work and the conservation of energy to explain your answer. A Since the mass is unchanged, the distance will be the same (20 m). B Since the speed is doubled, the INTERACTIVITY distance will be doubled (40 m). Reflect on Your Bumper C Since the speed is doubled, the Car Solution distance will be increased by a factor of 22, or 4 (80 m). D Since the speed increased by 15 m, the stopping distance increases by 15 m (35 m)