ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: wholeT on October 05, 2013, 01:13:40 pm

Title: Contour maps help
Post by: wholeT on October 05, 2013, 01:13:40 pm

Hi all, i need help with this question.
Given that the horizontal distance between F and G is 2km, the average gradient from G to F is

Much appreciated

The answer states that it is -0.15, however i got 0.15. Not sure whether i'm right.

Title: Re: Contour maps help
Post by: Stevensmay on October 05, 2013, 01:30:00 pm

From G to F means that we are starting at point G and heading towards point F.
As G is higher than F, we should expect to find a negative gradient as we are heading downwards, thus -0.15.

Title: Re: Contour maps help
Post by: Damoz.G on October 05, 2013, 11:31:50 pm

The Gradient is negative because Point G is 400m high and Point F is only 100m high. So from G TO F, it is doing downward.

If it asked you from F to G, then it would've been 0.15, because it would be upwards. :)