Ever wonder why some hits feel good when the bat connects with the pitch, while others leave your hands ringing? Or exactly how a pitcher throws a ball that seems to curve just as the batter swings? Physicist Dr. Kasey Wagoner says, like most things in our universe, it all comes back to physics. Just in time for MLB playoff season, he talks about the forces involved in different pitches and how the "sweet spot" of the bat works.