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physics

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An airport has runways only 132 m long. A small plane must reach a ground speed of 40 m/s before it can become airborne.
What average acceleration must the plane’s engines provide if it is to take off safely from its airport?
Answer in units of m/s2

  • physics - ,

    Vf^2 = Vo^2 + 2ad,
    a = (Vf^2 - Vo^2) / 2d,
    a = ((40)^2 - 0) / 264 = 6.1m/s^2.

  • math - ,

    66

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