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Lab 2 quiz key

# Lab 2 quiz key - Sample data for Activity(100 m dash The...

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Sample data for Activity (100 m dash): The men's and women’s 100 m dash finals at the 1997 World Championships: Men’s race MAURICE GREENE 9.86s DONOVAN BAILEY 9.91s TIM MONTGOMERY 9.94s Women’s race MARION JONES 10.83s ZHANNA PINTUSEVICH-BLOCK 10.85s CHRISTINE ARRON 11.05s Which elite sprinter had the fastest average velocity during the 100 meter race? (1pt) explain work. To find average velocity, take V = Distance/Time. For MG : 100 m/9.86 s = 10.14 m/s DB: 100m/9.91 = 10.09 m/s TM : 100m/9.94 = 10.06 m/s Thus, Maurice Green had the fastest average velocity with a speed of 10.14 m/s. Question 2 From the data in the previous question can we tell who had the highest acceleration? (yes, or no and explain why) (2pts) No. we don’t have enough data given to us to solve for acceleration. a=vf-vi/t. We don’t have vf. We can calculate the average velocity but that is neither final nor initial velocity. Often times in the 100 meter dash someone is ahead early in the race and gets passed up later. Since the highest accelerations are at the beginning of the race the person ahead at

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