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Physics 21 Online
OpenStudy (moonlight93):

4 multiple choice questions. please help, I got answers, but I'm not sure if I did them right. any help is appreciated. that's what I got 1. B 2. D 3. D 4. A

OpenStudy (moonlight93):

I put B for this one, but my friend said it could b d

OpenStudy (moonlight93):

A or D ? and how to know whether x is parabolic opening downward or upward?

OpenStudy (moonlight93):

Is this D?

OpenStudy (moonlight93):

I don't get this at all. How do I read acceleration vs time graphs?

OpenStudy (danjs):

Type out what you did so far in the first question.

OpenStudy (vincent-lyon.fr):

Answer to first question is ok.

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