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Homework Help: Martian Projectile Motion

  1. Apr 11, 2010 #1
    1. The problem statement, all variables and given/known data

    A Martian creature similar to an Earth frog jumps with an initial
    speed v0 and attains the range R over horizontal ground.
    The maximum possible height reached by the creature, neglecting
    friction in the tenuous Martian air, is ([tex]\vartheta[/tex] being the
    launch angle):

    (a) R/4tan[tex]\vartheta[/tex];
    (b) R/4sin[tex]\vartheta[/tex];
    (c) R/2tan[tex]\vartheta[/tex];
    (d) undetermined because of missing data.

    2. Relevant equations

    I tried using some formulas to derive the answer...

    [tex]\frac{voy}{g}[/tex]=thighest point

    and solved for t,

    t=[tex]\frac{voysin\vartheta}{g}[/tex]

    t=[tex]\frac{R}{vcos\vartheta}[/tex]

    and tried using a variety of the range projectile motion equation to get to this answer

    3. The attempt at a solution

    I know the answer is (a), but is there any easy way to geth there, I feel like I've been going around in circles
     
  2. jcsd
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