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Homework Help: Projectile Motions!

  1. Jan 1, 2012 #1
    1. How do angle of launch, range, and flight time relate to one each other?


    3. According to the equation above,in my opinion as θ increases, range should decrease and time(t) should increase. Is there any other way of knowing the relation?
  2. jcsd
  3. Jan 2, 2012 #2

    Actually as θ increase from 0, range first increase and then decrease

    you can find the relation b/w range in θ this way:

    Assume projectile launched at angle θ and speed u from horizontal
    first find time for projectile to reach max height, do this by using newton's first eqn ...
    now double it, you get time of flight T

    not for this time use simply d=vt in X direction, you get range, now you can substitute for u from any 1 eqn into another, and you get the required relation b/w angle of launch, range, and flight time
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