Category Archives: How do things move without contact?

ZERO-G Challenges of a Trip to Mars

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PhET: Masses and Springs

Hang masses from springs and discover how they stretch and oscillate. Compare two mass-spring systems, and experiment with spring constant. Transport the lab to different planets, slow down time, and observe the velocity and acceleration throughout the oscillation. Click to … Continue reading

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Vsauce – How Earth Moves

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Helium Balloon In Car

Which way will the balloon move as the car changes it motion?

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Physics Girl – Stacked Ball Drop

What happens when you drop a perfectly balanced stack of balls? And how is the result like a supernova? The classic momentum transfer demonstration, at the next level.

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The Physics of Weightless Flight

Ever wanted to know how those vomit comet planes simulate weightlessness?

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Gravity Quiz

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Forces quiz

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Lagrange Points

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Vsauce – Is Earth Actually Flat?

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