29. How to find the total distance traveled by a particle ...
[Pages:8]29. How to find the total distance traveled by a particle moving on the x-axis.
x(t) = position function x'(t) = v(t) = velocity function x''(t) = v'(t) = a(t) = acceleration function
*|v(t)| = speed function
The definite integral of velocity on [a, b] gives the displacement of a particle on [a, b]. To find the position of a particle given its initial position and the velocity function, add the initial
position to the displacement (integral of velocity).
To find the total distance traveled on [a, b] by a particle given the velocity function... o **WITH A CALCULATOR** integrate |v(t)| on [a, b] o **WITHOUT A CALCULATOR** Split up the velocity function into the positive and negative intervals: Set v(t) = 0, and split the integral at these points Take the absolute value of each integral The sum of these absolute values is the total distance traveled
Example: The velocity of a particle is given by v(t) = 2t2 ? 2. Find the total distance traveled when 0 ................
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