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How do you put force in a projectile equation

  1. Feb 1, 2015 #1
    Hi. I need to put the formula F=ma into the projectile formula
    displacement =(initial velocity)time+acceleration(time2)/2

    I've already tried it but can't. Please help me
    Thanks.
     
  2. jcsd
  3. Feb 1, 2015 #2

    berkeman

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    Staff: Mentor

    Welcome to the PF.

    Sure you can. The "a" in your first equation is the "acceleration" in your second equation.
     
  4. Feb 1, 2015 #3
    That acceleration is from gravity and I want to know the force taken to throw an object
     
  5. Feb 1, 2015 #4

    berkeman

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    Staff: Mentor

    So you write equations in both the x and y directions. Depending on the angle that the projectile is thrown, it may have both x and y components of acceleration that give the projectile initial velocity in the x and y directions. After that, only the acceleration of gravity affects the projectile in the y direction (assuming no air resistance effects).
     
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