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physics

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A car slows from 22 m/s to 3 m/s with an acceleration of -2.1m/s2. How long does this take?

  • physics - ,

    average acceleration a = change in velocity/change in time
    -2.1 = (3-22)/t
    -2.1 = -19/t
    t = 19/2.1

  • physics - ,

    A race car traveling at +44m/s is accelerated to a velocity of +22 m/s over an 11 s interval. What is the displacement during this time?

  • physics - ,

    average speed = 33 m/s
    33 * 11 meters

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