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Topic related to Forces and Newton's laws

  1. Oct 19, 2012 #1
    I wanted to ask from my intuition of Newton's First law that body in motion remains in motion. Assume we kick a ball on earth, we does our force of kicking stops. I mean ultimately it comes to a stop due to resistance and gravity. Now, assume it is in space with no gravity or air. When we kick it, it will move forever but it must've been moving with some accleration at the beginning b4 moving with const. velocity. When does our force of kicking actually stop. Is it the instant we lose contact with the ball? Thanks for any one who contributes! :)
     
  2. jcsd
  3. Oct 19, 2012 #2
    What do you think? Can it stop after we lose contact?
    No.
    So, it's either at that exact moment, or before.
     
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