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Weight And Terminal Velocity
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Weight And Terminal Velocity

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Transcript

  • 1. Weight and terminal velocity
  • 2. objectives
    • calculate an object’s weight
    • describe what terminal velocity is and how it comes about
    • draw and interpret velocity–time graphs for objects that reach terminal velocity
  • 3. starter
    • what is the odd one out?
    • explain why.
    • kg g N lbs mg st oz
  • 4. Gravity and weight
    • on Earth, there is 10N force on each 1kg mass
    weight (N) = mass (kg) x gravity (N/kg) what is your mass? what is your weight?
  • 5. 2 minute quick questions
  • 6. speed and drag
  • 7.
    • http://www.bbc.co.uk/learningzone/clips/why-does-a-human-have-a-different-terminal-velocity-to-a-mouse/8751.html
  • 8. Terminal Velocity
  • 9.  
  • 10.
    • exam q
  • 11. to finish with
    • The _______________ of an object can be calculated using the equation: W = m x g. On Earth, this means the weight is 10 times the mass, as the Earth’s gravitational field _______________ is 10 N/kg. The faster a body moves through a fluid, the _______________ the frictional force on the object. A body falling through a fluid will _______________ at first because of its weight. This will increase the friction, so the resultant force will _______________ . It will continue to accelerate until it reaches a terminal velocity when the weight is balanced by the _______________ .
    • friction greater reduce strength weight accelerate