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Math Help - Hard Pre-calc problem need help!!!

  1. #1
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    Question Hard Pre-calc problem need help!!!

    A stone is thrown from the top of a building which is 50 ft high at a speed of 30 m/s and a angle of 30 degrees above the horizon

    a second stone is thrown towards the first but this building is 100 ft high and the stone is thrown at 20 m/s and angle is 45 degrees

    the stones hit the ground at the same place how far apart are the buildings?


    thank you.
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  2. #2
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    Quote Originally Posted by Pre-Calc View Post
    A stone is thrown from the top of a building which is 50 ft high at a speed of 30 m/s and a angle of 30 degrees above the horizon

    a second stone is thrown towards the first but this building is 100 ft high and the stone is thrown at 20 m/s and angle is 45 degrees

    the stones hit the ground at the same place how far apart are the buildings?

    \Delta y = v_{yo} t - \frac{1}{2}gt^2

    start by using this equation to find the elapsed time of motion for each projectile.

    \Delta x = v_x t

    finish by determining \Delta x for both projectiles ... distance between the buildings will be \Delta x_1 + \Delta x_2
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