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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
1. A sprinter runs using a force of 200 N and a power output of 600 W. Calculate how many minutes it takes for the runner to run 1 km.
2. A baseball catcher stops a 98-mph fastball over a distance of 0.1 m. What is the force necessary to stop the 0.14-kg fastball?
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Q5;
For the two automobiles of Problem P6.31 in Chapter 6, how much power must the engines produce just to overcome air drag at 60 mph?
Problem P6.31
(a) A luxury sports car has a frontal area of 22.4 ft2 and a 0.29 coefficient of drag at 60 mph. What is the drag force on the vehicle at this speed?
(b) A sport-utility vehicle has CD= Â 0.45 at 60 mph and a slightly larger frontal area of 29.1 ft2 . What is the drag force in this case?
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