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Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
Force & motion notes 2013
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Force & motion notes 2013

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Transcript

  • 1. When an object’s distance from another object is changing. You must have a reference point in order to determine if something is in motion.
  • 2. Force or between objects. attraction two
  • 3. Gravity and Motion • The gravitational constant is 9.8 m/s². • Objects fall to Earth at the same acceleration regardless of mass.
  • 4. Measure of the force of attraction between an object and Earth. A Newton is the used to measure metric unit weight.
  • 5. Force between surfaces that resists the movement of one surface past another surface.
  • 6. Friction also exists between an object rolling across another surface.
  • 7. What affects acceleration? • Air resistance is a contributing factor to acceleration. • Air resistance is a fluid friction that opposes the motion of objects through air. • The amount of air resistance on an object depends on the size, shape, and velocity of the object. • The more surface area an object has, the more susceptible it is to air resistance.
  • 8. Acceleration continues … • As the speed of a falling object increases, the air resistance increases. • This upward force of air resistance increases until it reaches the downward force of gravity. • At this point the object stops accelerating and continues falling at a constant velocity called terminal velocity.
  • 9. Acceleration continues … • As the speed of a falling object increases, the air resistance increases. • This upward force of air resistance increases until it reaches the downward force of gravity. • At this point the object stops accelerating and continues falling at a constant velocity called terminal velocity.

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