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# Calculus/Velocity and acceleration.

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Elizabeth wrote at 2012-04-02 02:19:56
it should be a -8.

the equation b should be 200= (1/2)(-16)t^2+v0(t)

200= -8t^2+v0t

KnowItAll wrote at 2015-02-02 18:03:55
** in the equation for displacement, before we solve for A, acceleration should be replaced not by 16, but -16 because this is deceleration.

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