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Lab Report: What is the best way to throw: Wrist flick or no Wrist flick?

First Name: Sirius
Age: 9
Experiment Title: What is the best way to throw: Wrist flick or no Wrist flick?
What was the purpose of your experiment? Provide a brief description of what you were hoping to learn, discover, or study.: I was wondering what is the best way to throw.
What was your hypothesis?: It would be with the Wrist flick.
What materials did you use in your experiment? List them all.: Tennis ball, big open space.
What procedure was followed? Provide a brief description of the steps you followed during your experiment.: I threw the tennis ball with no wrist flick. Then, I threw it with a wrist flick. To be fair, I didn’t move my feet in both of them.
What were the results of your experiment?: Wrist flick went much further.
What is your conclusion after conducting the experiment? Was your hypothesis correct or incorrect?: My hypothesis was correct, Wrist flick went much further.
Spend a few minutes learning about the scientific principles involved in your experiment. Write 3-4 sentences about what you learned and how it relates to your experiment.: Distance in this experiment is the equivalent of of speed in a tennis serve. It makes a big difference. That quick wrist flick gives a sudden boost to racket head speed and more speed in the racket head translates to more speed in the serve.