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physic

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A car traveling at 80km/hr decelerates at 1.5m/s^2. Calculate
a) the time it takes to stop.
b) The distance travelled in the 3rd second.

  • physic -

    a. Vf=Vi-at solve for t.

    b. find distance at t=3, then distance at t=4 and subtract

    d=vi+at where t=3, then do it for t=4

  • physic -

    convert 80km/hr to m/s first.

  • physic -

    b)
    d=vi+at
    d=22.22+1.5+3=26.72
    d=22.22+1.5+4=27.72

    d=27.72-26.72
    d=1
    is it correct for

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