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6 April, 19:40

A small propeller airplane can comfortably achieve a high enough speed to take off on a runway that is 1/4 mile long. A large, fully loaded passenger jet has about the same acceleration from rest, but it needs to achieve twice the speed to take off. What is the minimum runway length that will serve

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  1. 6 April, 22:13
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    1 mile

    Step-by-step explanation:

    v² = u² + 2as

    Since initial speed is 0,

    v² = 2as

    a = v²/2s

    v²/2 (¼) = (2v) ²/2s

    v²/½ = 2v²/s

    2 = 2/s

    s = 1
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