a curve ball is a type of pitch in which the baseball spins on its axis as it heads for home plate. if a curve ball is thrown at 37.3 m/sm/s (83.4 mphmph ) with a spin rate of 33 rev/srev/s , how many revolutions does it complete before reaching home plate? assume that home plate is 18.3 mm (60 ftft ) from the pitching mound and that the baseball travels at a constant velocity.