(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

if theres a plane traveling north at 200 m/s and then travel south at 200 m/s then its change in velocity is 400 m/s south.

2. Relevant equations

3. The attempt at a solution

okay so the answer is 400 m/s south.

however, i don't understand why the change is 400, and not 0 or just 200?

i see the new direction is south.

is there an equation for problems like these?

maybe you could make up another example with the answer included so i can see this better.

thanks.

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# Homework Help: Easy change in direction question

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