Egg Drop - Welcome to Physics!



Egg Drop Project Instructionsright7620Description: You and a partner will construct a cargo crate to protect an egg from breaking on impact when it lands on a concrete surface. The crate will be free fall dropped from _______________________Materials: You will bring/collect your own materials.3114675508000Items to look for:drinking strawsPopsicle sticksStringmasking taperubber bandscotton ballszip lock bagpaper stripsplastic cupHot glueBanned:ANY Food ProductANYTHING that creates dragi.e. parachutes/balloonsGlass of any kind (safety issue)Grading Rubric:Crate Construction: 50 %Quality Construction20 pointsResearch10 pointsSchematic Drawing10 pointsExplanation10 pointsData & Calculations: 20%20 pointsConclusions: 20%20 pointsEgg Breakage: 10%10 points 10 points - Not Broken 5 points - Cracked 0 points – SmashedTOTAL100 pointsEgg Drop Project ReportCrate ConstructionQuality ConstructionNeeds to be sturdy, thought out, shows effort, and seems reasonably functional.ResearchLook at many egg drop devices and record 5 ideas/materials you think would be useful and WHY in terms of the Physics (momentum, impulse, time of impact):Material/ApplicationWhat is the purpose?Schematic Drawing Draw a sketch of your design:Be sure to label each materialExplanationTell how the device reduced the force of impact using these physics terms: Momentum, Impact, Time, Forcebe sure to underline/highlight each word in the paragraphData & CalculationsRecord Data: the mass of your crate with the egg inside of it:m: _________the fall time for your crate from launch to the ground: tfall: _____________Using fall time, calculate the velocity just as the crates hits the ground: (show work)v = g tfallv = v = ______Using the mass and the velocity at the start of the collision, calculate the change in momentum: (hint: what do you think final velocity will be if it stops?)?p = mvf - mvi ?p = ?p = ______Using the change in momentum, calculate the force of impact assuming the impact happens over a time of .01 s.F = ?p / timpactF = F = _______Conclusion (Must include at least 2 complete, thought out, sentences for each response)Should your crate’s design have increased or decreased the time for the eggs momentum to reach zero? WHY?How does this change in collision time caused by the crate affect the impact force?What could you do to improve on you results if you were to re-build your crate? WHY?List 5 other situations where using squishy materials to increase collision time be useful in real life? WHY?EXTRA CREDIT: (5 points)Explain step-by-step why in Data & Calculations step #4 we can use the formula F = ?p / t. ................
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