... an attempt to strike the batter out. In order to do this, force is required. The speed and velocity depends on what force is applied to the ball. There are several things happening when a pitch is thrown. ... is n , experiences a drag force given by Stokes' law."" (http://www.physics.usyd.edu.au/~cross/baseball.html) Stokes' law is an equation relating the terminal settling velocity of a smooth, rigid sphere in a thick fluid of known density and viscosity ... in the particle-size breakdown of soils by the pipette, hydrometer, or centrifuge process. The equation is: V = (2gr) (d1-d2)/9 ...

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