Pitch type spin direction ω (RPM) ω (rad/s) vr (m/s) vr (mph) --------------------------------------------------------------------------------- fastball backspin 2200 changeup backspin 1300 curve topspin 1300 --------------------------------------------------------------------------------- Q: Can you convert ω from RPM into radians per second? Q: Recall that R = 1.45 inch = 3.683 cm. Can you compute vr?
