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CSI: Physics

Who murdered Michael Hertz?! And how can Detectives Watt and Newton find out?
by

Tate R

on 23 May 2011

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Transcript of CSI: Physics

CSI: Physics Hypothesis: The greater the distance the water
balloon is dropped from , the greater velocity when it hits the ground therefore making a bigger splatter. The independent variable is the height and the dependent variable is the radius of the splatter. Michael Hertz's blood splatter was around 8.5 feet Conclusion: The hypothesis was supported by the detectives' data. The splatter is indeed greater when the velocity and distance are greater. One could improve this experiment by making sure the water balloons are closer together in weight. The scientist could also try a greater number of heights. This experiment could also be tried in the horizontal direction perhaps throwing balloons at a wall. Procedure
1. Fill water balloons to approximately the same weight, the weight doesn't have to be perfect - that would be impossible and unless someone wants to spend eternity getting water balloons to exactly the same size...just around the same weight will do.
2. Decide on which heights to drop the balloons from, as long as it is safe a person can do it as high as they want. The balloon just has to break.
3. Measure the heights and drop all balloons for that height. Make sure to time the drop of the balloons for later use.
4. Measure the splatter of the water from the center of the concentrated water out to the edges of the farthest splatter.
5. Record data
6. Try different heights and then compare results.
7. Calculate velocities by dividing distance dropped by time.
8. SOLVE THE CRIME!!! Question: How will the height a water balloon is dropped effect the radius of the splatter? How far away was Michael Hertz shot?
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