Your brain is contained in fluid in your skull, much like an ice cube in a glass of water. The result is less attentiveness and memory and slower reflexes. Jamshid Ghajar, the president of the Brain Trauma Foundation, is that the pulling and stretching of your brain results in tiny tears in the white matter - the tissue connecting the different brain regions.
What happens during a concussion, said Dr. A concussion causes chemical changes in your brain, which leave the brain unbalanced and more prone to damage for up to a year, said David Hovda, director of the Brain Injury Research Center at the University of California, Los Angeles. The increased susceptibility for a second concussion also comes down to brain chemistry. Also, after you have a concussion, you’re less attentive overall, making tasks like crossing the street that much more dangerous. Devoted football or soccer athletes may return to a game sooner than they should after taking a hard hit, greatly increasing their risk of another concussion. Surprisingly, this is actually more common than you might think. So if you jump right back on your bike, you won’t have the same reflexes to stop on a dime or swerve at the last minute. The first reason is the obvious: After you hit your head, you will be slower to react. There are two reasons why your risk increases: carelessness and brain chemistry. So I guess the lesson here for a boxer that wants to be strategic is that to achieve a knockout, they should aim for the head because the head will go much faster when the impulse is imparted only to the head versus when it's imparted to the whole body.Despite the old saying encouraging you to hop back on your bike after falling off, it turns out that may be bad advice, particularly if you hit your head on the fall.Īfter having one concussion you are more likely to have another - some doctors estimate you increase your risk up to three times. And that would probably result in a concussion injury but you know, unfortunately, that's the actual point in boxing is to cause concussion's because that's what it means to blackout and have a knockout is when somebody's had enough concussion injury that they go unconscious. And that is a significant speed if we convert it into kilometers per hour, we see that it's 54.0 kilometers an hour and that velocity is significant especially when it's imparted in this short duration of time of only 0.150 seconds. And then part (c) says what would the final velocity of their head be if they were struck in the head instead of in the center of mass of their body? So it's the same impulse because it's the same force applied for the same amount of time but now we are adding 10.0 kilograms multiplied by 0-initial velocity- divided by 10.0 kilograms here and we get a new final velocity of 15.0 meters per second.
#Physics how mu h force for a.concussion plus
So it's a 150 kilogram meters per second- impulse that we calculated in part (a)- plus 0 because the initial velocity is zero divided by 105 kilograms and that is 1.43 meters per second. So the final speed will be the impulse plus mass times initial velocity divided by mass. Part (b) says suppose the opponent is in the air, I guess they have jumped, and they have an initial velocity of zero and a mass of 105 kilograms and this hit strikes them near their center of mass so it's going to move their whole body, what will their final speed be? So impulse is the final momentum minus the initial momentum and we can solve for mv f by adding mv i to both sides and then switching the sides around and then solve for v f by dividing both sides by m. So we have a 1000 newtons times 0.150 seconds which is 150 kilogram meters per second or you could write these units as newton seconds if you prefer. So part (a) asks us what is the impulse given to the opponent? So that's gonna equal the net force applied on them multiplied by time and this force of the hit is going to be the net force because there's only going to be one horizontal force involved here. A boxer hits an opponent with a force of 1000 newtons and the hit lasts for 0.150 seconds. This is College Physics Answers with Shaun Dychko.
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