4. A biker is accelerating when she applies the brakes and then speeds up again. The net horizontal force is shown in the graph. Assume she moves in a straight line and the mass of the biker and bike is 80 kg. The biker was moving at 8 m/s at t = 0. How fast is she moving at t = 20 s? net x-Force (Newtons) 40 20 400 4 8 12 time (sec) 16 20

4. A biker is accelerating when she applies the brakes and then speeds up again. The net horizontal force is shown in the graph. Assume she moves in a straight line and the mass of the biker and bike is 80 kg. The biker was moving at 8 m/s at t = 0. How fast is she moving at t = 20 s? net x-Force (Newtons) 40 20 400 4 8 12 time (sec) 16 20

Name: Hi, I need help with number 4, thank you 4. A biker is accelerating wh
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Description: Hi, I need help with number 4, thank you 4. A biker is accelerating when she applies the brakesand then speeds up again. The net horizontal forceis shown in the graph. Assume she moves in astraight line and the mass of the biker and bike is 80kg. The

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: The Laws Of Motion

Section: Chapter Questions

Problem 5.41P: Figure P5.41 shows the speed of a persons body as he does a chin-up. Assume the motion is vertical...

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