The speed at which a light aircraft can take off is 120 km/h. (a) what is the minimum constant acceleration required for the plane to take off after it has run 240 meters? (b)how long does it take to take off?
ps. i want a solution. for reference, the answer is )2.32m/s^2 (b) 14.4s
Answers: 2
![v_{f} ^{2} =v_{i} ^{2}+2*g*dx\\where:\\v_{f}=120[\frac{km}{h} ]*\frac{1hr}{3600sg} * \frac{1000m}{1km} =33.33[m/s]\\\\Replacing\\33.33^{2}=0+2*a*(240)\\ a=\frac{11108.88}{2*240}\\ a=2.31[m/s^2]\\](/tpl/images/0438/2347/6bb3b.png)
![v_{f} =v_{i} +a*t\\replacing:\\33.33=0+(2.31*t)\\t=\frac{33.33}{2.31}\\ t=14.4[s]](/tpl/images/0438/2347/e47da.png)
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