IV.) Abrupt change in a, a = 1.5 to - 1.5, v> 0 Now we'll step things up. You'll need to practice this one a few times. When Moving Man is moving, we can change his velocity and acceleration. We'll change the acceleration. Practice changing velocity Warm up first. Set x = -6, v = 1 Hit the play button. Click on the textbox for acceleration. Change it to 2. But don't hit the enter button until MM is at x = 0. You should see an increase in the acceleration. Practice this a few times until you get the hang of changing the velocity in time. 1.) Now we'll make a prediction. Sketch the position-time and velocity-time graph for the acceleration changing from 1.5 m/s to -1.5 m/s. 2.) Run the simulation in the charts tab. When the simulation is done, take a screenshot of the chart. Include a screenshot of the chart below. Discuss any differences. Porow. Discuss ally differences. (3 pts.) Description of Motion (predicted) (3 pts.) Description of Motion (actual) (10 pts.) Graphs Part A While running a marathon, a long-distance runner uses a stopwatch to time herself over a distance of If she maintains her speed, how much time will it take her to run the next 200 m ? 100 m. She finds that she runs this distance in 21 s . Answer the following by considering ratios, Express your answer with the appropriate units. without computing her velocity. HA t = Value Units Submit Request Answer Part B How long will it take her to run a mile at this speed? Express your answer in seconds. IVO AEd Submit Request