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

A flying saucer maneuvering with constant acceleration is observed with the positions and velocities shown below:

http://imgur.com/gq1g0

What is the saucer's acceleration?

*note: I created the image in paint and I did forget to label the vectors. The one starting at the origin is '1' and the second vector is '2'.

2. Relevant equations

EDIT:

a(vector)=lim (as delta t approaches 0) delta v(vector)/delta t(vector)

That equals:

dv(vector)/dt

(dv_{x}/dt)i + (v_{y}/dt)j = a(vector)

3. The attempt at a solution

[STRIKE]The portion of the chapter that most closely relates to this, as far as I can see, is the bit on Galilean transformation of velocity. 'If we know an object's velocity measured in one reference frame, we can transform it into the velocity that would be measured by an experimenter in a different reference frame.'

That method simply converts between two reference points which is how I interpret the two different vectors. Same object w/ different reference points yields two different vectors for velocity.

The issue here is that I don't know how to find acceleration of which I understand to be a change in velocity over a change in time. Having not been provided any information on time elapsed I cannot figure out how to find acceleration. I have the answer in the back of the book and see that it's not some trick where it is not accelerating or the acceleration is 0.[/STRIKE]

None of that applies >_< The section this points to suggests you can combine two vectors into one and then somehow come up with instantaneous velocity but it doesn't provide any examples of how to do it; just images. I'm checking google to figure it out but am having a hard time coming up with a reasonable search.

Thank you!

~Odd

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# 2D Kinematics; Flying Saucer observed with two velocities

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