- #1
Kaleb
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Hey all, I am new to Physics. Recently changed majors from technical writing to physics for the amount of interest I have in the subject. I have been doing ok but I missed a couple of questions on my last homework and I feel that I should have had somebody check my general solved statements after I finished to make sure that I was correct. Anyways, enough about me!
What is the greatest acceleration a runner can muster if the friction between her shoes and the pavement is 90% of her weight?
F = ma
.9%*9.8 m/s
http://img183.imageshack.us/img183/8439/accelerationrn5.png
I figure since the force is her body moving at a constant velocity that the greatest acceleration she could reach would be 8.82 m/s. I also tried to make this using Newtons Second Law of a = Fnet/m but what would the net force be equal to? 90%? Any and all help is appreciated, but please post in user friendly terms as I am not that familiar with heavy physics terms yet as I have seen in some other topics(but not all).
Homework Statement
What is the greatest acceleration a runner can muster if the friction between her shoes and the pavement is 90% of her weight?
Homework Equations
F = ma
.9%*9.8 m/s
http://img183.imageshack.us/img183/8439/accelerationrn5.png
The Attempt at a Solution
I figure since the force is her body moving at a constant velocity that the greatest acceleration she could reach would be 8.82 m/s. I also tried to make this using Newtons Second Law of a = Fnet/m but what would the net force be equal to? 90%? Any and all help is appreciated, but please post in user friendly terms as I am not that familiar with heavy physics terms yet as I have seen in some other topics(but not all).
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