Sunday, November 20, 2011
Momentum and Impulse
This past week we have learned about the relationship between momentum and impulse. Momentum is the mass of an object multiplied by the velocity. Force also affects the momentum of an object. More force more momentum, vice versa. Impulse is the change of momentum divided by the change in time. For the most part, impulse stays the same. However, the momentum can vary. If you were to drop an ege, an egg would break upon impact on a cement ground. But take the same impulse and drop the egg on a cushion. The egg will not break because the contact time at which the egg is touching the cushion is greater than the contact of the egg and the cement ground. The millisecond difference of the contact time is the difference between a broken and a solid egg. This principle is applicable in many real world situations. Take for example a car. When a car gets into an accident, the car crumples like a can. Cars are designed to crumple to increase the contact time. Like the egg, the person driving the car will have the same impulse, but less momentum.
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Hmmm... Joseph that sounds very interesting. cars that are meant to be broken isnt that just interesting and dandie.
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