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OpenStudy (mimi_x3):
Two straight roads intersect at right angles. Two men, A and B, are 100 km from the intersection, one on each road. They drive towards the intersection at 30km^-1 and 40 khmh^-1 respectively. Find the distance of each driver from the intersection as a function of t, the time in hours for which they are driving. Hence find their distance apart, d(t), at any time. For what value of t is the distance apart least?
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OpenStudy (anonymous):
ah you posted it again
OpenStudy (mimi_x3):
Yup, i was staring it for hours i didn't even know how to do it -_-
OpenStudy (mimi_x3):
I tried working backwards but it didn't work. Or using the pythagorus theorem *sigh*
OpenStudy (saifoo.khan):
that looks soo scary.
OpenStudy (mimi_x3):
LOL, I know its killing me =/
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OpenStudy (anonymous):
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