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As this year comes to a close, the activities of summer are finding their way into my head more and more each day. One of my favorite things to do is go tubing. Besides an exciting water ride, tubing is a great example of physics is the real world. The boat pulling the tuber is an example of Newton's Third law: for ever action there is an equal and opposite reaction. The propellers on the boat push on the water which pushes back on the boat to propel it forward. The rope that connects the tuber to the boat must be a very strong rope due to the high amounts of tension it must withstand. Finally comes the tuber. There are two main friction points that make tubing great: between the water and the tube and between the tube and the person. The small amount of friction between the tube and the water allow the tube to go fast glide on the water. The friction between the person and the tube allow the person to stay on but it isn't large enough to make it easy for the person to stay on. 

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