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Independent Study? Swag.


Swagmeister11

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S'up everyone who is reading this (so basically my fellow classmates who are under orders to) and welcome to another blog post from the one, the only, Swagmeister. This weeks post includes a video! How exciting! And some physics...

the link is: http://www.youtube.com/watch?v=MO-BmG8kooA

It contains the entire highlight of the bills patriots game on September 25th, but the part I am concerned with is the end of video where Lindell makes the game-winning field goal.

This is a perfect (or at least decent real-life example) of impulse and momentum and their relationship, known as the impulse-momentum theorem. This theorem states that Impulse (J)= Change in Momentum (delta p), or since J= Force times time and p= mass times velocity, Ft=m(delta v), Ft= delta p, etc... Anyways this theorem is illustrated in the process of kicking a field goal because: the ball is initially at rest, thus it's momentum is 0. To change its momentum, an impulse must be applied to it. It is this impulse that will create the velocity of that football as it sails through the air, beating those stupid patriots. This impulse is created by the kicker applying a force on the ball (with their leg/body of course) for a time t. This is why follow through is so important, because it increases the time for which the force is applied and increases the impulse, causing a bigger change in velocity. Though, as Scott Norwood can tell you, having a big enough impulse does not guarantee that you will make the field goal... Enough on sad topics like wide right, for I've got a bills game to watch. Peace, my band of physics brotherz

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Guest hrh555mem

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You are very right (I know, I don't tell you that often...). :) But this makes me wonder how the impulse works when a ball has spin on it and/or goes at the wrong angle... What goes wrong there? Is the time of contact too short, or is it the same? What do you think?

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