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Math Help - Degrees slope?

  1. #1
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    Degrees slope?

    An apple falls from an apple tree growing on a 20 slope. The apple hits the ground with an impact velocity of 2.6 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope.

    I don't really understand what they mean by 20 degrees slope, what formula do I use?
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  2. #2
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    Re: Degrees slope?

    tilt the coordinate axes 20 degrees w/r to the horizontal ...
    Attached Thumbnails Attached Thumbnails Degrees slope?-axestilt.png  
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    Re: Degrees slope?

    So I just have to 2.6m/s(cos 20)?
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    Re: Degrees slope?

    Quote Originally Posted by Oldspice1212 View Post
    So I just have to 2.6m/s(cos 20)?
    parallel to the slope would be 2.6\sin(20)

    perpendicular to the slope is 2.6\cos(20)
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