Doing this problem that involves distance a satellite travels with respect to earth (in thousands of miles). Find the total distance traveled from 0 to 5 hours.
Critical Points: [-2/3, 2]
Now I am trying to gain a more tacit understanding of calculus, so my question is:
why is the integration of the velocity (position) from 0 to 5 hours not equal to the sum of integrals between [0,2] and [2,5]? I thought that integration is summation, so why is it then when an object is traveling away from earth, you have to do a separate integral for it?
The answer is 71,000 miles, but I can't seem to comprehend why integral doesn't count the "negative" velocity in total distance, but the area summation does.
Sorry if this question is confusing, appreciate any help .