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March 28, 2017

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A sprinter explodes out of the starting block with an acceleration of +2.3 m/s^2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity (a) at t=1.2 s ans (b) at the end of the race?

  • Physics - ,

    a. V = 2.3m/s^2 * 1.2s = 2.76m/s.

    b. Since the acceleration dropped to
    0 at 1.2 sec, the velocity remained
    constant at 2.76m/s.

  • Physics - ,

    thankyou soo much!!!

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