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Unformatted text preview: J ““9““ " \fi— “ ‘ ' ' _ ' _ —‘ ‘ l_l=_lil (- '3 3 fl [Qsessionmasteringphysicscomfmyctjassignments ‘ ._ __ {kl ’Kfl Chapters 1 5. 2 Homework ANSWER: (in Graph A ® Graph B (:1 Graph C (:3 Graph D Correct I In conclusion, graphs of velocity as a function of time are a useful representation of straight-line motion. If read correctly, they can provide you with all the information you need to study the motion. I Exercise 2.25: Automobile Airbags 'he human body can survive a negative acceleration trauma incident (sudden stop] if the magnitude of the acceleration is less than 250 mks. Part A l'fyou are in an automobile aCCident with an initial speed of‘l‘lG lam/h and are stopped by an airbag that inflates from the dashboard, over what distance must the airbag stop you for you to survive the cras h’? ANSWER: When plotting curves on Exercise 2.30, enter values every 2s, as close to your actual values as is allowed by the rather coarse default rounding. Exercise 2.30 At t = 0 a car is stopped at a traffic light. When the light turns green, the car starts to speed up, and gains speed at a constant rate until it reaches a speed of 20 mfg 8 seconds alter the light turns ...
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