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    A car accelerates uniformly from 5m/s to 20m/s over a distance of 500m.
    a. How long does this take?
    b. What is the car's acceleration?


    Can somebody help me on this? A-Level Physics has been blessed to me with a bad teacher who's not very good at explaining things. Either that or I'm just stupid.

    Please help?
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    Do you know the suvat equations?

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    s=500m
    u=5m/s
    v=20m/s
    a=?
    t=?

    s=1/2(u+v)t
    t=2s/(u+v)
    t=(2x500)/(5+20)
    t=40s

    v=u+at
    a=(v-u)/t
    a=(20-5)/40
    a=0.375m/s^2

    Hope this helps, make sure to get used to the 4 suvat equations (you should get given them for exams)

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    note that these equations only work if the object "accelerates uniformly" so make sure that's included in the question
 
 
 
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