Chapter_5_NewtonsThird_Law

# Chapter_5_NewtonsThird_Law - Newtons 3rd Law Oh and...

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Newton’s 3 rd Law Oh and Gravitational Force and Weight.

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Gravitational Force and Weight Weight is a Force, it is NOT the same as mass! The Force due to gravity is an exception to the statement that mass times acceleration does not constitute a nameable force. g m F g =
Mass vs Weight! Mass is a scalar, it has no direction! Mass is the same everywhere in the universe! Weight is a vector, it has direction! Weight changes with g! N g m F Earth on Earth on g 8 . 9 = = - - - N g m F Moon on Moon on g 6 . 1 = = - - - M = 1.0Kg g on-moon =(1/6)g on-earth

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How much you wanna’ bet I can throw this here football over that there mountain? Jupiter's mass is about 1.9 x 10 27 kg. Although this is 318 times the mass of the Earth, the gravity on Jupiter is only 254% of the gravity on Earth. This is because Jupiter is such a large planet (and the gravitational acceleration a planet exerts upon an object at the planet's surface is proportional to its mass and to the inverse of its radius squared). Neglecting air resistance which of the following statements is true? a) Aaron Rodgers could throw a football with a greater horizontal velocity on Jupiter than Earth, but not as high. b) Aaron Rodgers could throw a football with a less horizontal velocity on Jupiter than Earth, and not as high. c)
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Chapter_5_NewtonsThird_Law - Newtons 3rd Law Oh and...

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