Question

AP Calculus AB 2003 #2
http://www.collegeboard.com/prod_downloads/ap/students/calculus/calculus_ab_frq_03.pdf
I don't understand how to do part c).

Answer 1

total distance is integral of velocity but u gotta take into consideration which way it's going

Answer 2

I looked at the sample respoinses and they did like absolute value of v(t). But I don't understand why.
http://apcentral.collegeboard.com/apc/public/repository/ap03_calculusab_q2_27980.pdf

Answer 3

so you found where it changes direction right?

Answer 4

the thing is...