Two cars start moving from the same point in two directions that makes 90 degrees at the constant speeds of s1 and s2. Find a formula for the rate of change of the distance D between the two cars.

Question

calculusfunctions · Answer

I presume you know calculus?

calculusfunctions · Answer

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Let s1t = x and s2t = y represent the the distances the two cars travel. Let r = the distance between the two cars at any given time. I just noticed that you want D as distance. That's fine. r = D. Do you understand @gF ?