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“My Egg Safety Device”. Name and Date. Appearance and Materials. My device looks like …….. I used cardboard, a coffee can, some foam padding, and string to protect the egg. The Physics. The egg will be traveling 20 feet (6.1 meters)

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Presentation Transcript
appearance and materials
Appearance and Materials
  • My device looks like ……..
  • I used cardboard, a coffee can, some foam padding, and string to protect the egg
the physics
The Physics
  • The egg will be traveling 20 feet (6.1 meters)
  • Time to fall, from Distance = ½*g*t^2 is 1.12 seconds (with no air resistance).
  • Max speed from acceleration, v = g*t is 11m/s
  • Mass of egg = 60 grams or 0.060 kg
  • Momentum = m*v = 0.66 kg*m/s
  • Potential Energy of Drop = m*g*h = 3.6 Joules
  •  Required Impulse = 0.66 kg*m/s
  •  Required work on egg = 3.6 Joules
the physics1
The Physics
  • Newton’s First Law – Inertia: egg keeps going
  • Newton’s Second Law – Forces cause accelerations
  • Newton’s Third Law – Foam pushed egg, egg pushes foam
  • Momentum and Impulse – Impulse causes changes in momentum, Impulse = F*t
  • Work = Change in Energy – Work = F*distance
my egg safety device will
My Egg Safety Device Will….
  • Reduce forces on the egg by …….
  • (Work = Force x Distance)
  • (Impulse = Force x time)

Describe the materials that reduce the force on your egg. Compare your design to car safety devices and sports equipment designed to protect your “egg”.

some things i tried that didn t work
Some things I tried that didn’t work
  • Dropping a live chicken
  • Using a zip-lock bag full of marshmallows (might actually work!)
  • Wrapping rubber bands around it to make it into a “super-egg”