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4 February, 12:04

Sandra is riding a bicycle at 10.0 meters/seconds. SHe slows down to 2.0 meters/seconds in 10 seconds. Her acceleration is. how many meeters / seconds?

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  1. 4 February, 13:07
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    Answer: a = - 0.8 m/s2 distance = x = 60m

    Explanation: vo=10m/s, vf=2m/s, t=10s

    a = (vf-vo) / t = (2-10) / 10 = - 0.8 m/s2 (sign means reduce your seed)

    the second question is not clear. i do believe that you need the distance sandra moved (units ... meters ... not meters/second)

    x=xo + vot + at*t/2 = 0+10*10-0.8*10*10/2 = 60m

    best wishes form colombia
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