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Get out your reading guide but DO NOT turn it in

Get out your reading guide but DO NOT turn it in. Go over reading guide Gravity Notes Weight and Mass Calculations Homework: Weight Worksheet. What is gravity?. Agenda. AQOD. Gravity. Gravity. What is it?. Gravity.

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Get out your reading guide but DO NOT turn it in

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  1. Get out your reading guide but DO NOT turn it in • Go over reading guide • Gravity Notes • Weight and Mass Calculations • Homework: Weight Worksheet • What is gravity? Agenda AQOD

  2. Gravity

  3. Gravity • What is it?

  4. Gravity • Gravity is the attractive force between any two objects that have mass. • depends on the masses of the objects and the distance between them. • Increases as mass increases or as the objects get closer.

  5. Gravity • depends on • the masses of the objects • the distance between them. • Increases as mass increases or as the objects get closer.

  6. Earth’s gravitational acceleration • If you dropped a book and a piece of paper at the same time which would hit the ground first? • Take out air resistance. Now what?

  7. Acceleration on earth due to gravity • Force of gravity on a falling object can be calculated with 2nd law equation • Fg = weight = mg • g = 9.8 m/s2 (On earth) • What about on Jupiter?

  8. Gravity on other planets

  9. Mass vs Weight • The amount of matter an object contains • Will NOT change if you visit another planet • Measured in kg • Gravitational force exerted on an object • Will change if you visit another planet, because the acceleration due to gravity changes • Measured in N MASS WEIGHT

  10. Weightlessness & Free Fall • Parabolic Dive Video

  11. “Weightlessness” on the Space Shuttle… • Objects seem weightless (float around) on the space shuttle because they are in orbit with the space shuttle. • In other words, objects are in free fall…falling AROUND the Earth rather than downward toward it.

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