# Physics

A car weighing 9800 N moves around a circular track of 70 m in 60 s.
a. What is the speed or the car?
b. What is the centripetal acceleration?
c. What is the centripetal force?
d. What is the coefficient of friction between the tires and the road?

The distance around a circle is diameter*PI.

speed = distance/time

centripetal acceleration = v^2/r

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