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Rate magnitude of vertical component

  1. Nov 19, 2008 #1
    A skier is moving at 85 km/hr straight down a tall mountain having a slope of 60 degrees. At what rate is the magnitude of the vertical component of his trip decreasing?

    I just don't understand exactly how to find it. The wording doesn't make sense to me and I don't know where to start.
  2. jcsd
  3. Nov 20, 2008 #2


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    Welcome to PF!

    Hi hulahoop09! Welcome to PF! :smile:
    Yes, it's not the most straightforward way of describing it, is it? :rolleyes:

    The "vertical component of his trip" is simply his height (measured vertically, relative to something like sea-level).

    "Magnitude" just means "size" … and could just as well have been left out completely!

    So the question is really, at what rate is his height decreasing? :smile:
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