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Homework Help: Projectile motion astronaut problem

  1. Sep 11, 2008 #1
    1. The problem statement, all variables and given/known data
    An astronaut on the moon, where g=1.6m/s/s, strikes a golfball giving the ball a velocity of 32m/s [35degrees above the moons horizontal]. The ball lands in a crater floor that is 15m below the level where it was struck. Determine:

    a) The maximum height of the ball


    2. Relevant equations



    3. The attempt at a solution

    sin(35)=Vy/32
    Vy= 18m/s

    d=V1t+1/2at^2
    0=18t + 0.5(-1.6)t^2
    0.8t=18
    t=22.5

    d=18(22.5/2)+0.5(-1.6)(22.5/2)
    d=198-8.8
    d=189m
     
  2. jcsd
  3. Sep 12, 2008 #2

    alphysicist

    User Avatar
    Homework Helper

    Hi Morhas,

    If you compare this to the equation you have above, you can see the time is supposed to be squared in the second term on the right hand side.

     
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