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  • May 10, 2011, 09:49 PM
    sam2011
    Tow dimension
    ?

    A projectile is fired from the ground with an initial velocity of 82 m/s at an angle of 55 above the horizontial .
    1- What are the initial x and y componets of the velocity ?
    2- What is the x component of the projectile 1.2 s after being fired , relative the firing point?
    3- What is the y component of the projectile 1.2 s after being fired , relative the firing point ?
  • May 11, 2011, 04:54 AM
    jcaron2
    Let's start with part 1 (the other two are pretty straightforward after that):

    You have the angle, and you have the total velocity. Do you know how to find the x- and y-components of the velocity if you have those two things? What mathematical property of an angle gives you it's x-component? And y?

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