The weight and construction of a bat also affects the bounce factor and it affects the time and position of the bat at which the swing speed is a maximum. The batter might find that he needs to change the way he swings the bat if the swing weight is altered, or he might have a “grooved” swing technique and swing every bat the same way. There is no simple physics answer to the heavy/light bat question. In practice, batters tend to prefer bats that are lighter, rather than more powerful, since lighter bats are easier to swing and make it easier for the batter to connect with the ball.
Gravity plays a major role in baseball, a rule says what goes up must come down the higher the ball is hit the longer it takes to come down it also drifts away due to wind altitude ect.
One of the top baseball players is Miguel cabrea Some of the reasons he is a really good hitter is because he has very quick hands Making the bat travel faster to hit the ball the faster the bat speed the better the contact