Preparing the Witness For Testimony George (Tex) Quesada Sommerman & Quesada.
BY: Jorge Quesada Research Elasticity Friction Air Resistance.
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What factors affect the bounce of a ball? BY: Jorge Quesada
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Transcript of BY: Jorge Quesada Research Elasticity Friction Air Resistance.
- Slide 1
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- BY: Jorge Quesada
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- Research Elasticity Friction Air Resistance
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- Hypothesis If I drop a ball from a high point then, it well bounce higher than if dropped from a lower height.
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- Independent and Dependent Variable Independent Variable The height The type of ball Dependent Variable Speed at witch the ball falls
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- Controlled Variable (3) The Type of ball Friction Rate of fall
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- Materials and Procedures Materials Foam balls Timer (phone) Ladder Pen and Paper Procedure Position a ladder at the site of the experiment. Drop a ball three times (one at a time) from a height of 5ft, record rate of fall. Drop a ball three times (one at a time) from a height of 8ft, record rate of fall. compare results
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- Data
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- Conclusion It turn out that my hypothesis was indeed correct, that the higher the ball fell the more time it took for it to land.
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- Experiment 2 Does wind affect the time it takes a ball to land on the ground?
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- Hypothesis If my research is correct, I think that wind will affect the landing time of a ball.
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- Independent and dependent variable Independent variable Speed of wind (high, low, medium) The ball Dependent variable Speed the ball falls
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- Controlled variables Air friction Rate of fall Type of ball
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- Materials and procedures Materials Ball fan Procedures Place a fan in the mid point of the balls falling distance. Drop ball from 6 ft on low(fan speeds), then medium, and high. Repeat 3 times. Record time of fall and average.
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- Data
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- conclusion It turns out that the speed of the fan did affect the time it took the ball to hit the ground.
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- Experiment 3 Does height affect the elasticity of a ball?
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- Hypothesis I think it does have a effect on the ball elasticity in the height the ball is dropped
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- Independent and dependent variable Independent variable Foam ball The height the ball is dropped from Dependent variable The height the ball jumps back up in inches
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- Controlled variable Type of ball Elasticity The height the ball is dropped
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- Materials and procedures Materials Foam ball Measuring tape Procedures One person stands in place Ball is dropped from 3, 4 and 5 feet high Record bounce distance of the ball in inches
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- Data
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- Conclusion The elasticity of the ball was affect to the height the ball was dropped.
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