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March 4, 2015

March 4, 2015

Posted by **thommini** on Saturday, February 20, 2010 at 7:16am.

- maths -
**drwls**, Saturday, February 20, 2010 at 8:07amWhen you add a west-facing vector of length 200 t and a north-facing vector of length 150 t, the resultant displacement, which is the hypotenuse, will have a length of 250 t. This is becasue the sides of the right triangle are always in a 3:4:5 ratio.

(250t)^2 = (150t)^2+ (200t)^2

After t = 2 hours, they will be d = 500 miles apart, since

d^2 = sqrt[{300)^2 + (400)^2)]

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