Kyle Schwarber in midseason form

[Parade_Rain]

Brett and PR

mass increases proportionate to velocity. That faster a bat moves the more mass it has the more force it can apply to the ball. However, force does not need to come from velocity. Therefore, bat speed can generate mass that translates to force on a ball. Or.........Strength can generate force on a ball. One is not greater than the other.

In either case the result is momentum of a ball away from a bat. That is what determines distance: trajectory, momentum, drag, gravity and anything else that can decelerate a ball like the ground, a wall or a glove. We now look at momentum in exist velocity.

I don't think bat speed is the end all and it is not the only factor in determining the exist velocity of a ball.

In the middle of a project. Will come back later with something other than cleft notes. It appears to me that you are confusing mass with momentum. An object's mass does not change. A bat isn't eating a piece of Lou Malnati's on the way to the ball. Otherwise, your analysis is OK. I don't agree that Schwarber is going to be better than Bryant and I don't agree green that Bryant is going to be better than Schwarber. Soler could be better than both of them. These kids have yet to make the adjustments that a player like Harper has. Where I am in 100% agreement on your thoughts about Bryant is that he has too much of an uppercut.

 

[brett05]

Brett and PR

mass increases proportionate to velocity. That faster a bat moves the more mass it has the more force it can apply to the ball. However, force does not need to come from velocity. Therefore, bat speed can generate mass that translates to force on a ball. Or.........Strength can generate force on a ball. One is not greater than the other.

In either case the result is momentum of a ball away from a bat. That is what determines distance: trajectory, momentum, drag, gravity and anything else that can decelerate a ball like the ground, a wall or a glove. We now look at momentum in exist velocity.

I don't think bat speed is the end all and it is not the only factor in determining the exist velocity of a ball.

Doesn't the speed of the ball coming at the bat also contribute greatly to exit velocity?

 

[czman]

In the middle of a project. Will come back later with something other than cleft notes. It appears to me that you are confusing mass with momentum. An object's mass does not change. A bat isn't eating a piece of Lou Malnati's on the way to the ball. Otherwise, your analysis is OK. I don't agree that Schwarber is going to be better than Bryant and I don't agree green that Bryant is going to be better than Schwarber. Soler could be better than both of them. These kids have yet to make the adjustments that a player like Harper has. Where I am in 100% agreement on your thoughts about Bryant is that he has too much of an uppercut.

You are correct. mass does not unless the object is moving faster than 10% of the speed of light. I am sure No one swings a bat that fast.

 

[Parade_Rain]

Doesn't the speed of the ball coming at the bat also contribute greatly to exit velocity?

No. 1 MPH of increased bat speed is much greater than 1 MPH increase of pitched ball hitting the bat.

 

[czman]

http://www.real-world-physics-problems.com/physics-of-hitting-a-baseball.html

http://www.acs.psu.edu/drussell/bats/batw8.html

http://www.acs.psu.edu/drussell/bats/bat-moi.html

Not a math teacher. I think sums it up well.

 

[brett05]

No. 1 MPH of increased bat speed is much greater than 1 MPH increase of pitched ball hitting the bat.

That maybe, but that wasn't my statement. I found this link which is interesting:

http://boards.straightdope.com/sdmb/showthread.php?t=262094

 

[Parade_Rain]

That maybe, but that wasn't my statement. I found this link which is interesting:

http://boards.straightdope.com/sdmb/showthread.php?t=262094

LOL. You asked if pitching velocity impacted ball exit speed. A Kyle Hendricks fast ball is going to go within a couple of feet of the same ball from the same batter on a Chapman fastball. Hence... 1 mph greater bat speed is more important than 1 mph greater pitched ball speed.

 

[brett05]

LOL. You asked if pitching velocity impacted ball exit speed. A Kyle Hendricks fast ball is going to go within a couple of feet of the same ball from the same batter on a Chapman fastball. Hence... 1 mph greater bat speed is more important than 1 mph greater pitched ball speed.

What's the exact affect?

 

[Parade_Rain]

What's the exact affect?

Will give something better than cleft notes version later. Kthx.

 

[Parade_Rain]

OK. Forgot about this conversation. I've posted this one before with Nomar-

How do they hit slower pitches farther in a HR derby-

[video=youtube;y9CEuJ5e2cM]https://www.youtube.com/watch?v=y9CEuJ5e2cM[/video]

From Fangraphs. Note the author isn't getting into launch angle. As mentioned in the Sports Science video, changing the swing plane for the home run derby impacts launch angle for greater distance.

http://www.fangraphs.com/blogs/pitch-speed-and-quality-of-contact/

Group 1 includes homers hit off pitches with an average speed of 66.0 miles per hour, +/- 2.7. Group 2 includes homers hit off pitches with an average speed of 97.7 miles per hour, +/- 0.8. Obviously, these two groups are significantly different — the average pitch in Group 2 was 48% faster than the average pitch in Group 1.
...
There’s nothing there to be found. The average speed off bat for a homer in Group 1 is 103.2 miles per hour, +/- 4.7. The average speed off bat for a homer in Group 2 is 103.3 miles per hour, +/- 4.3. Last season, the league-average speed off bat for a homer was 103.4 miles per hour. That hasn’t really changed since 2008.

The results are virtually identical. The slowest pitches hit for home runs came off the bat the same as the fastest pitches hit for home runs, at least in terms of speed. I didn’t check distance or launch angle, because I was most interested in the one number I noted. The fastest pitch hit for a home run was hit by Tyler Greene off Andrew Cashner in May 2012, and it left the bat at a recorded 101.2 miles per hour. The slowest pitch hit for a home run was hit by Ike Davis off Vicente Padilla in July 2010, and it left the bat at a recorded 102.7 miles per hour. The Cashner pitch was 47.4 miles per hour faster than the Padilla pitch.
...

 

[brett05]

SO my question would be, take the human aspect out of it completely as there are additional variables we cannot account for. using a machine to project the ball to a machine with a bat. Same pitch, same swing plane. Which ball goes farther? And how much farther? That's the true test.

 

[Parade_Rain]

SO my question would be, take the human aspect out of it completely as there are additional variables we cannot account for. using a machine to project the ball to a machine with a bat. Same pitch, same swing plane. Which ball goes farther? And how much farther? That's the true test.

Scientifically, 1 additional mph of bat speed equals 6 feet. 1 additional mph of pitch speed equals 1 foot.

Theoretically, someone could claim Schwarber doesn't have as much bat speed as Bryant, which could be true, but he optimizes his barrel path through the zone to hit long balls. I haven't dug deep enough to see his launch angle/bat speed chart.

 

[brett05]

Scientifically, 1 additional mph of bat speed equals 6 feet. 1 additional mph of pitch speed equals 1 foot.

Theoretically, someone could claim Schwarber doesn't have as much bat speed as Bryant, which could be true, but he optimizes his barrel path through the zone to hit long balls. I haven't dug deep enough to see his launch angle/bat speed chart.

Excellent. So if the swing is the same, the ball should travel one foot farther per additional mile per hour from the speed of the ball being thrown.

For me, I really thought the speed of the ball had a greater affect than ~15%. The more you know.