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The great Balloon Toss Objective 6CD Momentum & Impulse

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Purpose: To investigate the effect of three variables: (mass, collision time, momentum, velocity change) Materials Required: Water balloons lab apron goggles

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Data Table Record your mass, distance and time in your table for each attempted toss. Calculate the velocity of each attempted toss and record it in your data table. Calculate the average velocity (Δv) of your balloon and record it at the bottom of your table.

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Procedure Student lab groups will participate in a balloon toss contest. Each lab group will need two participants, a timer and a recorder. Students will fill and mass their balloons before leaving the classroom. Student participants will form two long lines 1 meter apart facing each other and directly across from their partner. One student tosses the balloon to his/her partner while the timer records the time it takes the balloon to reach the partner while the recorder keeps track of distance. If the balloon is caught without breaking, then the team remains in the contest; any group who breaks the balloon is eliminated from the contest. All successful teams must now back up 1 meter. The balloons are then tossed back to the other partner. Once more if the balloon is caught without breaking, then the team remains in the contest. All successful teams back up one meter. The process is continued until only one team remains.

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Graphing Your Results Time should be used as the independent variable, with distance being the dependent variable. Indicate the data point for each toss: time v. distance Using a star, indicate the calculated average velocity on your graph. Draw a best fit line from the origin through the star.

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Analysis 1. Calculate the momentum of your balloon at the greatest distance tossed. 2.Calculate the force of impact for your balloon at the greatest distance tossed. 3.The force required to stop a balloon is dependent upon the mass, velocity change, and collision time for that balloon. Use your calculations to express your understanding of the relationship between these variables.

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