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What has a greater acceleration?

  1. Dec 7, 2009 #1
    1. The problem statement, all variables and given/known data
    Is the acceleration of a car greater when the accelerator is pushed to the floor or when the brake pedal is pushed down hard?
  2. jcsd
  3. Dec 7, 2009 #2


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    What do you think?

    Useful data, a Porsche 911 can do 0-60mph in 8secs and 60-0 in 105ft
  4. Dec 7, 2009 #3


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    Is this a trick question? (Hint: think about the sign of acceleration)
    Last edited: Dec 7, 2009
  5. Dec 7, 2009 #4


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    I don't think it can be a trick question since, if it were a trick question, the axis aren't defined. (No one said going forward was positive!)
  6. Dec 7, 2009 #5
    depends on the car. You look at vehicle stats in a magazine, usually they are stated in terms of distancefrom 60mph to zero. Maybe a 100 ft-200 ft. If you have a car that gets to 60mph in 100 feet, you be driving a fuelie.
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