The Great Egg Drop

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Real-Life “Egg Drops”

• Mars Rovers (2004)– Descent onto Martian surface

• Giant airbags• Bounced on surface until coming

to rest

• Felix Baumgartner (2012)– Highest free-fall in history

• Free fall altitude: 39045 m (128100 ft)

• Speed attained: 1342.8 km/h• Free fall time: 4:20 min

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Acceleration: A Review

• The rate at which the velocity of an object changes

– Constant• Velocity (speed and/or

direction) changes by the same amount every second

– Changing• Velocity (speed ad/or

direction) changes by a different amount every second

Gravity

Centripetal

Forward

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Forces: A Review

• A push or a pull on an object – Applied– Normal– Friction

FG

Friction

Applied

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Newton’s First Law of Motion

“Objects in motion stay in motion and objects at rest stay at rest unless acted on by an external force”

• All objects have inertia– A tendency not to change their

motion• Remain at rest• Remain in motion

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Newton’s Second Law of Motion

“The acceleration of an object is created by a net force on the object”

• F = m a– For a given object, a larger

force generates a larger acceleration

– For a given force, a higher mass generates a lower acceleration

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Newton’s Third Law of Motion

“For every action,

there is an equal and opposite reaction”

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Egg Drop Requirements Overview• Materials

– 4 types can be selected – Limited supply, so plan ahead

• Size– Must fit inside a 10” sphere

• Design– Complete accurate sketch before beginning construction– Must be approved before building– BE CREATIVE!!!

• Remember, a simple shell doesn’t help the egg survive alone!