Question

A jetliner, traveling northward, is landing with a speed of 69 m/s. Once the jet touches down, it has 750 m of runway in which to reduce its speed to 6.1 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing.

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The plane's starting and the final velocity are:

v0=69m/sv=6.1m/sv_0=69\,\text{m/s}\\ v=6.1\,\text{m/s}

and the distance is:

x=750mx=750\,\text{m}

We have to calculate the average acceleration of the plane.

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