Lisa K.




The experiment conducted by our ninth grade conceptual physics class,
was the Egg Drop Eggstravaganza. This experiment included each student in the class to create an egg case in which they would place their egg inside. As a class, we dropped our homemade egg cases off of our
stadium bleachers into the grass. The purpose of this activity was to
see if the impulse of the ground was a great enough force to break the
egg. We all had approximately the same mass for our egg cases so the
change in momentum would be approximately equal as well. Our main goal is to have an increase in time for the egg cases to drop so that the
impulse or force exerted from the ground would be less; making it more
likely for the egg to remain a whole. The equation for impulse is
J=F(delta symbol)t. The delta symbol(t) represents the change in time
the object undergoes.

When throwing our eggcases off of the bleachers we hoped the time would be increased enough so the force would be less!
In the picture to the left, shows our ninth grade class dropping our egg cases off of our bleachers into the grass below.


The egg case I created consisted of a peanut can and a inner layer of
bubble rap. The egg fit very securely within the circular peanut can
because of the many layers of bubble rap to support the egg. I chose
bubble rap to surround the inside of the can with because of the air
bubbles it has. The air bubbles acted as a padding for the egg. I
believe the bubble rap kept my egg from breaking.

As shown in the picture, you can see how the egg is surrounded by bubble rap packed into the peanut can.
This is a picture of my egg case!
The picture below shows me standing with my egg case.


no my egg did not break. My egg did dont break because of the support it obtained from my padded peanut can. By adding the padding to the can, to surround the egg, this created a supportive cushion to protect the egg from the force the ground exerted. By increasing the time it took for the egg to move I decreased the force. Since there was lessof a force present, my egg was able to withstand the impulse exerted by the ground.

The picture below is a photo of my egg case after it was dropped from the bleachers.

I believe my design was very practical because the hard peanut can with
an air filled padding (bubble rap), helped keep the egg stable.
Clearly, the bubble rap kept the egg from breaking as well. I could
improve my project by possibly adding more cushioning (bubble rap) to
increase the time further and add additional support to the fragile egg.






1. A parachuter who increases the time by bending his knees when landing
obsorbs the force exerted by the ground. By increasing the time they will in return decrese the force and not get hurt!

2. An air bag in a car increases the time it takes a person to
potentially fly forward. This increase in time lowers the amount of
force exerted on the person and can definately save a life!

3. A spring floor used in cheerleading and gymnastics is another real
life application of this concept because the time is increased due to
the force the springs obsorb which decreases the force being exerted on
the cheerleader or gymnast. Now the athlete will not hurt their knees or other body parts.

4. When you ride with a punch you increase the time which decreases the
force exerted to your body from the opponent. This could save you from
painful injuries!

5. When a football player wears padding, the person is increasing the
time and decreasing the force if someone were to tackle them. The
padding obsorbs the force.

6. When catching a football you can increase the time by extending your
arms out and bringing the ball to your chest. This decreases the force
and likelihood of a jammed finger!

7. ATV's, four wheelers, and dirtbikes all have shocks so you can
increase the time and have a decreased amount of force resulting in a
smoother riding experience.

8. When shipping items, objects usually break in the process. To
correct this people pack the objects in bubble rap because of the air
pockets which increase the time of impact decreasing the force exerted
on the object. This means there is less of a chance the object will not
crack and potentially shadder!

9. Shin guards in soccer increase the time of impact which decreases
the force a foot or soccer ball may cause to a leg. Since the force will be decreased the soccer player will have less bruises.

10. Playgrounds now use chopped tires instead of mulch. These tires are
rubber. Therefore, they are a softer material which act as a padding if you
were to fall off of playground equipment. The chopped tires increase the time
of impact and decrease the force since they are more of a cushion to
land on compared to mulch! This could save a child from breaking an arm or spraining an anckle.






Above are pictures to go along with the real life examples given.
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Above are pictures to go along with the real life examples given.