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OpenStudy (anonymous):
An aircraft has a mass of 2.80 x 105 kg. At a certain instant during its landing, its speed is 51.8 m/s. If the braking force is 3.70 x 105 N, what is the speed of the airplane 13.9 s later?
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OpenStudy (anonymous):
This is a motion problem that is best done with a picture: |dw:1382673560588:dw| Solve with \[A = \frac {\Delta v}{\Delta t} = \frac {v_f -v_i}{t_f - t_i} -> v_f = v_i + A(t_f - t_i)\]
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