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? 391 mi/h2 40.0 mi/h2 5,000 mi/h2 48,800 mi/h2

Answer 1

$a_{centrip}= \frac{v^2}{R}= \frac{125^2 }{0.32}=48828 \frac{mi}{h^2}$
The last one is the closest

Answer 2

48,800 mi/h2 is the right answer