Egg Drop Tutorial (Drop vs. Stop)

As you journey through each step of this tutorial ask yourself one question: Is my egg dropping at this point or stopping?

Mass of egg = 0.060 kg (60 grams)

Average time of stopwatches = ______?s (get this from your teacher)

Before you start this tutorial, remind yourselves of how vt-graphs work and why they are important. What kinds of shapes do we usually see on them? What physics concepts do the parts of each shape represent?This tutorial serves as a great review for the Fall Final Exam!!!!!!!!!

Assume no air resistance in this tutorial!!

  1. Draw a vt-graph of the motion of the egg as it fell(dropped).
  2. On the same vt-graph above add the motion of the egg stopping.(continue from where you left off on the previous question).
  3. At this point you should have 2 shapes on your vt-graph. Make a simple data table that allows you to record all the similarities and differences between all the parts of the 2 shapes.
  4. Give a detailed description of the acceleration difference betweendrop and stop.Use the vt-graph as your guide.
  5. Locate the point on your vt-graph that represents the velocity of your egg at the moment in time when the egg began to stop? What else does this point represent?
  6. Calculate the velocity of the egg just before it landed.
  7. Showing all work, calculate the distance the egg fell. (Use the vt-graph as your guide. What parts of the “drop” shape do you already know?)
  8. What is the product of velocity and mass called in Physics?
  9. Calculate the vfmof the egg just before it began to stop (vfm of the drop).
  10. How much Δvmm(vf – vi)did the egg undergo only while it was dropping?
  11. What’s another name for the change in momentum? What is the formula for this other concept? (In other words, what is Δvm also equal to?)
  12. Calculate the Δvm of the egg while it was stopping? HINT: What is the vfof all successful stops?Also consider your answer to #5. How does the answer to #12 compare to your answer in #10? How does the direction compare to #10?
  13. How much Δvmwould the egg undergowhile it was stopping if it wasn’t inside your device (if we just dropped an egg by itself)? HINT: Do eggs inside Egg Drop devices freefall at a different rates than eggs not inside devices (if we assume no air resistance.)
  14. Compare your answers to #12 and #13.
  15. Draw a labeled graph of vmon the y axis and t on the x axis of the egg stopping inside your device. No data points are necessary just remember the mass stays the same and the velocity changes over time.
  16. Draw a similar graph of just an eggalone being stopped by the concrete. (no device to protect it)
  17. What things are similar or different in each graph? (Compare the shapes again. Record your answers like in #3)
  18. Answer this Question: Do eggs without devices break because they have different amounts of Impulse than eggs inside devices? Why or Why Not?
  19. What does the slope of graphs 15 and 16 represent?
  1. What are your thoughts on the difference between the egg being stopped by your device and the egg being stopped by the concrete? Why does the egg break in one situation and not the other(Hopefully). Be specific!! Be sure to mention the parts of the shapes on the momentum-time graphs in your explanation.
  2. Calculate the time it takes the egg to stop.In order to do this you must estimate the distance you think your egg moved in the device when it was stopping. (Today’s Warm-up.)(Show all Work). Use the vt-graph in #2 as a guide.
  3. Calculate the acceleration of the stop. (Slope Equation from vt-graph #2)
  4. Calculate the amount of force necessary to stop the egg. (Show all Work - use graph #15 as a guide. HINT: - We now have a “new” slope equation)
  5. Describe the stopping force? What kind of force is it? What exerts this force?
  6. Answer # 24 again, except this time discuss the force causing the egg to Drop.
  7. Calculate the Dropping Force. (Don’t over-think this)

Record your tutorial information in this data table. If you calculated the answer, record the question # of that calculation in the “How?” column. If you reasoned it out write “R”. If it was measured write “M”. Some examples are already marked on your data table to get you started.

Direction orientation is the standard up is (+) and down is (-)

Drop Information / Stop Information
Quantity / Magnitude / Direction
+ or - / How? / Quantity / Magnitude / Direction
+ or - / How?
vi / NA / vi / R
vf / #6 / vf / NA
a / a
d / d / Estimation
From Warm Up
t / NA / M / t / NA
vim / vim / R
vfm / #9 / vfm
Δvm / Δvm / #10
F / F