(adsbygoogle = window.adsbygoogle || []).push({}); 1. A sprinter, whose mass is 75 kg, runs a 50 meter dash. The total elapsed time is 8.5 seconds. The sprinter accelerates at a constant rate over the first second and runs the rest of the race at constant velocity.

a. Calculate the average power produced for the first second.

b. What is the maximum power the sprinter generates?

hint: Displacement over the 1st second plus displacement over the rest of the race = 50 meters.

2. Kinematics: D=(v0+v1)/2)*t, P=w/t, P=Fv

3. i tried putting 50=(0+v1)/2)*8.5 to get V, but since there are two diffrent speeds because he accelerates, I don't think this is right. I put 0 for V0, d=5-, and t=1 and tried to solve for A, but to no avail.

Any help would be appricated.

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# Homework Help: Difficult kinematics/power question

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