physics

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A motor cyclist travelling at 12m/s decelerates at 3m/s^2.
(a)How long does he take to come to rest?
(b)How far does he travel in coming to rest?

  • physics -

    a. vf=vi+at
    0=12-3t solve for t in seconds
    b. distance= avgvelocity*time=6m/s*time

  • physics -

    9m/s

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