At its peak, a tornado is 60.0 m in diameter and carries 500 km/h winds. What is its angular velocity in revolutions per second?

Answer 1

v=500000/3600 =138.9 m/s
ω=v/R=138.9/30=4.63 rad/s
n= ω/2π=4.63/2 π=0.74 rev/s