Session 3 · Hour 1 · Stuff, pull, room, pile

1. Hour 1Stuff, pull, room, pile
2. Hour 2Mass is not weight
3. Hour 3Room and density
4. Hour 4The same stuff, two planets

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Mass is stuff. Kilogram.

CheckMass does not care which planet. Weight does. Write mass, weight as mg, density as m over V.