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The graph below shows a plot of the position of a particle as a function of time. I need help determining whether the statements concerning the motion of the particle are true or false.

The graph: http://imgur.com/yNeHoF3

???? - The instantaneous acceleration at B is zero.

True - The instantaneous velocity at F is zero.

???? - The average acceleration over segment AE is less than zero.

False - The average velocity over segment FG is zero.

That's what I have so far! I'm not even sure if the last one is right. I've looked it up, and I can't find how to find acceleration on a position-time graph, only velocity. Any help would be great!

The graph: http://imgur.com/yNeHoF3

???? - The instantaneous acceleration at B is zero.

True - The instantaneous velocity at F is zero.

???? - The average acceleration over segment AE is less than zero.

False - The average velocity over segment FG is zero.

That's what I have so far! I'm not even sure if the last one is right. I've looked it up, and I can't find how to find acceleration on a position-time graph, only velocity. Any help would be great!

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