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Project title Tennis racquet string tension and ball speed Featured science projectScience project video
Difficulty Level High school
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This science fair project was carried out to understand how the string tension level of a tennis racquet will affect the speed of the ball during play. The experiment was performed using 2 different levels of tension.  

Instructions preview
1. For this science fair project, the independent variable is the tension level of the string in the racquets – 50lbs or 70lbs. The dependent variable is the resultant velocity of the ball, determined using the radar gun. The constants (control variables) are the skill of the tennis player, the weight of the racquets, the stiffness of the racquet frames and the type of tennis balls used. 2. The strings on the 2 tennis racquets are adjusted so that the first racquet will have a string tension of 50 lbs while the second racquet will have a string tension .....
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