Question

A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centripetal acceleration of the car?
48,800 mi/h 2
40.0 mi/h 2
5,000 mi/h 2
391 mi/h 2

Answer 1

The general formula for centripetal acceleration is as follows:

\(a_c=\frac{v^2}{r}\)
In this particular example, velocity is given as 125 mi/h, and the radius is given as 0.320 mi, you can just plug and chug now

Answer 2

thank you !