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Homework Help: Air resistance and projectile help

  1. May 16, 2007 #1
    if we lunch a projectile with the act of air resistance which t (time) is longer
    t1 =>from t=0 to arriving to the highest point
    t2=> from highest point to the lanch point
  2. jcsd
  3. May 16, 2007 #2
    You tell me. Choose two points at the same height of the trajectory. Compare their velocities. This should be a great hint.
  4. May 18, 2007 #3
    my problem is velocity i dont know how air rsistance affects on velocity?
  5. May 18, 2007 #4


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    Air resistance slows things down. That should be enough information
  6. May 20, 2007 #5
    If there is no air resistance(assumption), then?
  7. May 20, 2007 #6
    Consider the forces when a particle is thrown upwards.
    And the forces then it is going downeards.
    Straightforward answer!
  8. May 20, 2007 #7
    In case you didn't know... Fair = -kv, where k is some constant. This means that the faster the ball is going, more air resistance is acting.
  9. May 22, 2007 #8
    then t1=t2? right?
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