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Physics

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An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 2.7 m/s2. The magnitude of the car's velocity at the end of stage 2 is 2.8 times greater than it is at the end of stage 1. Find the magnitude of the acceleration in stage 2.

  • Physics -

    time for each stage = T
    V1 = 2.7 T
    V2 = 2.7 T + a T

    2.7 T + a T = 2.8 (2.7 T)
    2.7 + a = 2.8 * 2.7
    a = 1.8*2.7

  • Physics -

    7.56

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