Asked by John
How do you find the total distance a particle travels on a given interval on a graph and net distance?
Answers
Answered by
Steve
look up the arc length. The particle must move along a curve. At each small interval, the curve can be considered a straight line, with "arc length"
ds^2 = dx^2 + dy^2
Thus, adding up all the tiny hypotenuses gives.
s = ∫ds
= ∫√(dx^2+dy^2)
= ∫√(1+(y')^2) dx
ds^2 = dx^2 + dy^2
Thus, adding up all the tiny hypotenuses gives.
s = ∫ds
= ∫√(dx^2+dy^2)
= ∫√(1+(y')^2) dx
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