Friday, December 9, 2011

Impulse

So still on the topic of the whole momentum thing, we learned about IMPULSE. I learned that impulse is pretty much the change in momentum. In an equation, to solve for impulse, you would just use Impulse = change in time X average force.

Going back to learning more about momentum, I also learned that there are certain ways to stop a object in motion without breaking the object or hurting yourself. For example, our fantastic water balloon toss during our physics field trip on Konia field. The object of the water balloon toss was to see how far pairs could toss the balloon with momentum and have the other person catch it without it breaking. The trick to this was increasing the impact time. If we stood facing sideways and caught the balloon with a sideways motion in the same direction the balloon was going, there would a longer time for the impact time which decreases the impulse of the balloon. By catching the balloon in cupped hands or with your body, the balloon would have a major change in momentum because it would come to a complete stop, and then it would burst because of the sudden impact.

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