The Physics of Rube Goldberg Machines

When you drop a marble, what does gravity cause it to do?

• Stop

• Move at a constant velocity

• Accelerate

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If something isn't moving at all, what is its velocity?

• positive

• negative

• zero

If a marble rolls at a constant velocity on a completely flat surface, what is it doing?

• Moving a certain distance every second in the same direction

• Increasing its speed by a certain amount every second

• Remaining in the same position for a certain amount of time

If a marble is accelerating, it is

• moving fast

• changing it's speed or direction

• not moving at all

A force is defined as

• a push or pull

• something Yoda uses in Star Wars

• some other third thing

Newton's First Law states:

• An object in motion or at rest will remain that way unless an unbalanced force acts on it.

• An object in motion or at rest will eventually come to a state of rest.

• An object in motion or at rest will eventually begin to move.

Unless somebody knocks your Rube Goldberg machine over, it will

• remain where it is.

• start to mysteriously move across the room on it's own.

• spontaneously combust.

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What did you learn from Newton's Laws from the Rube Goldberg Machine?

• The heavier the object that falls, the more force it will produce.

• The heavier the object that falls, the less force it will produce.

• All objects that fall produce the same amount of force.

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What did you learn about Newton's 2nd Law from the Rube Goldberg Machine?

• The harder you push on something, the less it will speed up.

• The harder you push on something, the more it will speed up.

• The harder you push on something, it won't change its speed

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Newton's 3rd Law states that if you push an object like a wall,

• there is no force because the wall doesn't seem to move.

• the wall will move just as much as you do.

• the wall will push back with equal force in the opposite direction.

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