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Wind Resistance- Explination
The wind resistance problem is a fairly simple topic, I can explain it, or give an experiment to explain it. I will do both ways, just because I want to get a good grade on this project.

The simple explination to wind resistance is when the wind is blowing on your back, and you are snowboarding, running, biking, roller blading, skateboarding, or whatever, the wind is pushing you along, and letting you use less effort and force, to come out with the same speed and the same distance. But when the wind is blowing in your face, the wind is holding you back, and making you use more effort and force to come out with the same speed and the same distance.

Wind Resistance- Experiment
The experiment is very simple, also. Take any form of transportation, but nothing motorized, perferably running. Go onto a track, and make sure that there is alot of wind, and it will be blowing into your face or on your back if you were to run the 100-meter dash, which you will. Line up on the start of the 100-meter dash, and have someone time you when you are sprinting with the wind blowing in your face. Then take a break, and make sure you are back at 100%, and do the same thing goin with the wind, and have someone time you. Compare the differences, and then see if it is easier goin against the wind, or with the wind. also observe which made you work harder, and which hurt your legs more.
All matters combined
There are a lot of matters to wind resistance. One is what i just explained, the strength of the wind, holding you back or pushing you foward. Another is the surface area of the object, most likely you. If you are a big person, 6'3" with a 52" waist, you will be held back more than a small person, like 5'3" with a 29" waist. That is because he has a bigger surface area, and is less arrow dynamic.