# Grambling

A jetliner, traveling northward, is landing with a speed of 83.8 m/s. Once the jet touches down, it has 750 m of runway in which to reduce its speed to 11.4 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of the plane's motion as positive).

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3. 9
1. V^2 = Vo^2 + 2a*d

V = 11.4 m/s
Vo = 83.8 m/s
d = 750 m.
Solve for a. It should be negative.

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posted by Henry

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