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Homework Help: Projectile locust jump question

  1. Jul 13, 2008 #1
    Large insects such as Locusts can jump as far as 75 cm. on a level surface. an entomologist analyzed a photograph and found that the insects's launch was at an angle of 55.
    What was the initial velocity of the insect?

    those are the only givens im given... how do i figure this one out? Even a small hint would be appreciated :-D
  2. jcsd
  3. Jul 13, 2008 #2


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    Homework Helper

    Having the initial angle is quite a lot. From that you can identify the initial x and y velocity components. That is a good place to start.

    What formula can describe the distance observed in the x direction? And how might you calculate the time of flight from initial y velocity and knowing gravity acts at a constant rate?
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