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Adding impulse to injury


ThatGuy

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As most of you know, tonights hockey game is probably one of he most important of the season, because it is in memory of Tyler Putnam. Plus, we are expecting lottttts of people to attend. As many of you also know, one of the two "starting" goalies is injured, leaving on one left. Well he got hurt last night at practice by a shot that snuck through his pads and caught him in the knee.

So, since he must play tonight his coach said to cushion his knee, so when he falls on it the force is reduced....but will it help...i say it wont.

J=FT. So adding cushion will increase time, which will reduce force since in the end J is constant no atter what F or T equal. The problem we students sometime forget about is after the impact. Yes, when the knee is impacting the ice, force can be reduced by adding cushion however, after the impact is over, the knee is at rest on the ice. When it is at rest, there is still a mass of 250 foot-pounds on top of it, which pushes down on the knee with 250 pounds of force, which hurts like hell.

So my coach was wrong. Force will be reduced during the actual impact, but once the knee is at rest on the ice, no amount of cushoin will get rid of the 250 pounds of force on the knee. get at me coach.:stupid:

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