Question

Cathy Nguyen races on a bicycle with 13-inch radius wheels. When she is traveling at a speed of 44 ft/sec, how many revolutions per minute are her wheels making?

Answer 1

\[C=2\pi r\]

Answer 2

Circumference of the wheel is the distance traveled in 1 revolution.

Answer 3

please, note that:
after 1 minute each wheel has travelled a distance of 44*60=2640 ft
and the circumference of each wheel is: (2*3.14*13)/12=6.8 ft

Answer 4

so one revolution is equivalent to 6.8 ft, then the revolutions in 1 minute will be?

Answer 5

please contiue

Answer 6

oops...please continue

Answer 7

Thanks

Answer 8

Thanks!