Help me with an easy FR?

Test Preparation AP Mathematics & Computer Science
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<p><a href="http://apcentral.collegeboard.com/apc/public/repository/ap09_calculus_bc_sgs.pdf%5B/url%5D"&gt;http://apcentral.collegeboard.com/apc/public/repository/ap09_calculus_bc_sgs.pdf&lt;/a&gt;&lt;/p>

<p>part b, I don't understand where 0.2+0.2+1.4 comes from?</p>

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<p>This is BC Calc by the way, sorry for forgetting to mention it</p>

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<p>Integral of |V| is total DISTANCE traveled (hence, not displacement). So its not just the integral from 0 to 12. Since you have a negative area for 2 to 4 (cause shes walking back home) you have to split up your integrals.</p>

<p>so .2 + .2 + 1.4 is just from how they split up integrals</p>