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The Physics of a spitting out sunflower seeds


RileyMcGwin

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As I'm sure many of you know eating sunflower seeds is a very popular task and one that is full of physics. Such as when you are biting down on the seed to crack it you are putting a force down onto the seed that is needed to crack but did you know that the seed is putting a force onto you. Indeed the seed is putting a force onto you called the normal force. This helps allow you split the shell. Now when you spit out the sunflower seed you are doing a kinetic equation that will affect the distance that you are able to spit the seed. Such as if you want to spit the seed farther you have to give it an initial velocity. Then this in turn will give it a larger displacement and will result in a final velocity of zero because the seed will have landed on the ground. This is the physics involved in spitting out sunflower seeds.

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