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A jetliner, traveling northward, is landing with a speed of 72 m/s. Once the jet touches down, it has 730 m of runway in which to reduce its speed to 5.9 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to be northward).

  • physics - ,

    The acceleration (a) must be southward to slow the plane down. An equation you can use is:

    2 a X = [V2^2 - V1^2]

    where V2 = 5.9 m/s and V1 = 72 m/s

    Solve for a. It will be negative (meaning the opposite or northward)

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