Children's 82745

The children's car has wheels with a radius of 15 cm, and its speed is 36 km/h. How many times does the toy car wheel turn in a minute at this speed?

Correct answer:

n =  636.6

Step-by-step explanation:

r=15 cm m=15:100  m=0.15 m v=36 km/h m/s=36:3.6  m/s=10 m/s T=1 min s=1 60  s=60 s  o=2π r=2 3.1416 0.150.9425 m s=v T=10 60=600 m  n=s/o=600/0.9425=636.6



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