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Effect on throwing a ball up in a car on it's efficiency

  1. Jan 17, 2015 #1
    I just wanted to know when we throw something like a ball up inside a moving car, the weight of that ball till it is air is 0 on the car.Does it mean that the car has become lighter and will take less energy to run.I know the effect is every small but please tell the answer.
     
  2. jcsd
  3. Jan 17, 2015 #2

    phinds

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    2016 Award

    How about what happens AS you throw the ball up in the air and as you catch it when it comes down? Do you think things might average out?
     
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