Video

Understanding mass (grams and kilograms) (Full video)

Khan Academy
Supporting grades: 3

Description: Sal talks about what mass means. He also examines the masses of real objects in grams and kilograms. Now, if you're on a given planet, and the same distance from the center of that planet, roughly speaking, mass and weight will be strongly related to each other. Two things with the same mass, once again if I'm on the same planet, at the same distance from the center of the planet, they're going to have the same weight. So you'll often hear people say, "How many grams does that thing weigh?"

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