Energy in motion

Explore collisions, stored energy, springs, magnets and pendulums.

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1. 1

   What stays the same when two carts collide?

   Compare ideal bouncing and sticking collisions with explicit momentum accounting.

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2. 2

   Where does stored height energy go?

   Track a cart down a schematic slope and account for motion and thermal energy.

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3. 3

   Why does a stretched spring pull back?

   Compare spring displacement, restoring force and ideal oscillation.

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4. 4

   When do two magnets push apart?

   Turn one bar magnet and compare facing poles and force directions.

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5. 5

   What changes a pendulum’s swing time?

   Compare ideal small-angle pendulums while changing length and bob mass.

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Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.

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