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Post by BearClause on Aug 31, 2011 16:25:15 GMT -5
Again, after watching several golf tournaments, I notice a late break on a ball from side spin. It might even be intentional in some cases. Are you talking about in the air or when on the ground? In the air there is no such thing as a "late break" due to spin. What is perceived as a "break" is just the result of a constant acceleration. Since the distance from a straight line (ie. "break") is a function of the acceleration and the (time of flight)^2, most of the distance moved to the side happens at the end of the trajectory. It's the time-squared term coming in to play. But there is no real "break," as in a point where the ball suddenly starts moving sideways. The "float" or "knuckle" phenomenon is different. In that case, there actually can be a side-force suddenly applied to the ball late in the trajectory that wasn't there earlier. Well - I do understand the concept of acceleration. I was just simplifying, because the perception of the curve is that it breaks late even though there was less perceptible curve from the point of contact. It seems a lot like parabolic flight.
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Post by mikegarrison on Aug 31, 2011 16:37:01 GMT -5
Are you talking about in the air or when on the ground? In the air there is no such thing as a "late break" due to spin. What is perceived as a "break" is just the result of a constant acceleration. Since the distance from a straight line (ie. "break") is a function of the acceleration and the (time of flight)^2, most of the distance moved to the side happens at the end of the trajectory. It's the time-squared term coming in to play. But there is no real "break," as in a point where the ball suddenly starts moving sideways. The "float" or "knuckle" phenomenon is different. In that case, there actually can be a side-force suddenly applied to the ball late in the trajectory that wasn't there earlier. Well - I do understand the concept of acceleration. I was just simplifying, because the perception of the curve is that it breaks late even though there was less perceptible curve from the point of contact. It seems a lot like parabolic flight. OK. It was just worth clarifying, because a lot of people don't realize that there is not really any actual "break" to a curveball (or a hooking/slicing golf ball). A knuckleball (or a float serve) can actually "break," which is why they can be so difficult to deal with.
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Post by redbeard2008 on Aug 31, 2011 18:53:11 GMT -5
Here's an excellent video:
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Post by redbeard2008 on Sept 4, 2011 14:23:44 GMT -5
Another angle on this is ROI (Return On Investment), with investment being practice time or repetitions and return being match results. My entirely subjective impression is that it takes less practice time or repetitions to learn and maintain a jump float serve than a jump topspin serve, while producing fewer service errors. Even if match results are the same or close to the same, practice time or repetitions saved by going with the float over the topspin could be reinvested in developing and maintaining other skills (such as serve receive, for instance). You'd still need at least one player to learn and maintain the topspin jump serve to be able to practice against it, of course.
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