Scientific method
Updated: 10/7/2020
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• Purpose
• The purpose of my experiment is to see if I throw the ball 3 times on the wall at different speeds how fast it will come back to me.
• The independent variable is trying to see how fast will the ball come back to me each time I throw it. The dependent variable is how many seconds will each ball come back to me when I throw it.
• Hypothesis
• If I throw 1 ball 3 times at different forces then the ball will come back to me at different speeds this will happen because every action has a equal and opposite reaction, so the more force I use to throw the ball the faster it comes back to me.
• Wall
• Material
• To do this experiment the materials you will need is:-A tennis ball-An empty wall maybe not fully empty but empty enough to be able to throw a ball on it
• Tennis Ball
• Procedure
• Step 1: Go grab a ballStep 2: Find a wall that's mostly empty (has no paintings, tables, and etc.)Step 3: Go on your knees, and be at least 2 feet (24 inches) away from the wallStep 4: Throw the ball lightly on the wall but hard enough for the ball to bounce off the wall and come back to you
• Observations
• What I noticed is that the harder I threw my yellow tennis ball the less time it took for the ball to come back to me. The first time I threw the ball it came to me in 1 second. The second time I threw the ball it came back to me in half a second. The third time I threw the ball it came back to me in less than half a second.
• Conclusions
• I have now figured out that the more force I use to throw the ball the less time it takes for it to come back.
• Step 5: Throw the ball again but at a harder force. Step 6: Throw the ball harder than you threw it before
• I also think that how fast the ball comes back to me depends on what ball your using . Like if you using a hard bouncy ball like me for this experiment I think it will come back to you quicker, but if you have a soft less bouncier ball I think it will come to you slower. However, this experiment is not about which ball your are using.