What’s the difference? MASS AND WEIGHT. MASS The quantity of matter in an object Always constant Can never be zero Measured with a balance Unit: grams.

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Presentation transcript:

What’s the difference? MASS AND WEIGHT

MASS The quantity of matter in an object Always constant Can never be zero Measured with a balance Unit: grams

WEIGHT A measure of force, gravity Dependent on mass of object and force of attraction Can be zero Measured with a scale Unit: Newtons

MASS AND WEIGHT BY LOCATION Gravity is constant, so mass and weight are the same on Earth Varies in space and on other planets

PROBLEM SOLVED! We are concerned with mass, as it is constant in time and place