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Math Help - Physics help please?

  1. #1
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    Physics help please?

    In my physics class we did a lab where we shot a ball bearing from a mechanism. I am wondering how I can calculate the distance it traveled (even thought I measured it) as well as how I can calculate the initial velocity.

    The notes I took are as follows:

    Height from floor to bottom of ball bearing: 85.4 cm
    Average distance ball traveled (out of 10 shots): 250.24 cm

    Also, how could I calculate time if I wanted to?

    Thanks a ton!
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  2. #2
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    was the initial velocity horizontally directed?
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    yeah it was horizontally directed
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  4. #4
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    Quote Originally Posted by colerelm1 View Post
    yeah it was horizontally directed
    t = \sqrt{\frac{2h}{g}}

    v_0 = v_x = \frac{\Delta x}{t} = \Delta x \cdot \sqrt{\frac{g}{2h}}
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  5. #5
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    Thanks!

    how could I calculate distance?

    On a seperate note: what if the ball was shot at a 22 degree angle, how could I solve for the distance then?
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  6. #6
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    Quote Originally Posted by colerelm1 View Post
    Thanks!

    how could I calculate distance?

    On a seperate note: what if the ball was shot at a 22 degree angle, how could I solve for the distance then?
    1. \Delta x = v_x \cdot t

    you would need the initial velocity to find it.

    2. same equation as above ... given the initial velocity, you'll need to solve the equation \Delta y = v_{0y}t - \frac{1}{2}gt^2 for t
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