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The Laws of Ball Flight
http://www.publinksgolfer.net/articles/805/1/The-Laws-of-Ball-Flight/Page1.html
Golfing Magazine Staff
 
By Golfing Magazine Staff
Published on 06/28/2010
 

The Laws of Ball Flight
In recent years, there has been a major transformation in golf technology with the advent of 3D Doppler radar analysis of the movements of the golf ball and golf club. Flightscope, the world’s first 3D Doppler radar system, provides measurements of club and ball in a way that changes the way golf swings and shots are analyzed and described.
     Now, there’s lots of analysis circulating that’s trying to address the new data provided by 3D measurement. But most of this analysis is, in my opinion, confusing and counter-productive. So I have modified the modern ball flight laws and 3D data into the new Explosive Golf School Ball Flight Guide. I’ll approach things in clear terms and in a simple sequence so you understand the way the golf swing and ball flight with different clubs is properly described.

Lesson One: Angle of Attack
Angle of attack is a measure of the direction of the clubhead relative to the ground as it approaches the ball. A measurement that’s negative means the clubhead is moving downward into the ball at the moment of contact.   
     There are specific attack angles that are best for irons and woods. While the angle of attack for driver among amateurs should probably not be negative like the pros, the other numbers in the accompanying box give you an idea of what you should be doing as you move the clubhead into the ball.