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phyics

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An airport has runways only 184 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

  • phyics - ,

    with the plane starting from rest and a uniform acceleration, the average velocity is 20 m/s

    so the time of acceleration is 184/20 or 9.2 s

    the acceleration is (40 m/s) / 9.2 s

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