海鸥加速器下载

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When working with position/time graphs of accelerated motion, it is easy to confuse the dire
ction of velocity with the direction of acceleration. for example, look at the two graphs below:

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Many students will instinctively say that the first graph is positive acceleration, while the second graph is negative. In fact, km810cm快猫破解 bbs4.cn, as you can see here:

parabola fullIt is a single parabola, representing positive acceleration.

So how do I get kids to recognize positive and negative acceleration? Using the following, stupidly simple trick:

km810cm快猫破解 bbs4.cn

Positive face

parabola 3

Negative face

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