Acurve 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 35.6 m/s (80 mph ) with a spin rate of 29 rev/s , how many revolutions does it complete before reaching home plate? assume that home plate is 18.3 m (60 ft) from the pitching mound and that the baseball travels at a constant velocity.