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Gravity

Gravity. Gravity is a ___________ that pulls objects together. Isaac Newton and Universal Gravitation 2 Factors that affect the attraction between objects: 1 . _______________ 2 ._______________. - Friction and Gravity. Gravity. - Friction and Gravity. Weight vs. Mass.

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Gravity

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  1. Gravity • Gravity is a ___________ that pulls objects together. • Isaac Newton and Universal Gravitation • 2 Factors that affect the attraction between objects: 1. _______________ 2._______________

  2. - Friction and Gravity Gravity

  3. - Friction and Gravity Weight vs. Mass • Weight = force of gravity (on the objectYOU) • Mass = amount of matter (stuff) in an object

  4. Weight • Measure of the force of gravity on an object (YOU!)

  5. Weight vs. Mass • On A Mountain Top (you weigh less because you are farther from the center of Earth) * Mass is the Same!

  6. On The Moon (you weigh lessbecause there is less gravitational force than on Earth) • Mass is the Same! (amount of matter remains the same)

  7. Gravity and Motion • Free Fall • Air Resistance • Projectile Motion

  8. Gravity and Motion Free Fall- only the force of gravity (unbalanced force) is acting on the object

  9. Galileo (late 1500’s) – dropped 2 different sized cannon balls (at the same time) from the Leaning Tower of Pisa . . . they landed at the same time!

  10. - Friction and Gravity

  11. - Friction and Gravity Air Resistance (fluid friction)

  12. Acceleration of a falling object is due to the force of gravity Air Resistance - opposes the downward motion of an object

  13. Projectile Motion • An object that is thrown • Examples: • Shooting an Arrow • Throwing a Baseball

  14. - Rockets and Satellites

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