Centripetal acceleration

  • Thread starter caccers
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  • #1
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Homework Statement



I am having difficulty with a problem: A race care goes around a level, circular track with a diameter of 1.00 km at a constant speed of 90.0 km/h. Wha tis the car<s centripetal acceleration in m/s^2?

Homework Equations



Ac=v^2/r

The Attempt at a Solution



I'm not quite sure if I'm supposed to find the radius of the 1.00 diameter or if I simply use the 1.00 km as my radius in the above equation...?
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
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..[tex]a=\frac{v^2}{r}[/tex]

r=radius...so yes you must find the radius(which is half of the diameter!).
 
  • #3
Kurdt
Staff Emeritus
Science Advisor
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6
Radius is half the diameter.
 

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