the acceleration (j) of the jet and gravitational acceleration (g) are two sides of the triangle
j / g = tan(25º)
... j = 9.8 m/s^2 * tan(25º)
multiplying j by 11 s will give the takeoff speed
Francesca dangles her watch from a thin piece of string while the jetliner she is in accelerates for takeoff, which takes about 11 s .
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Part A
Estimate the takeoff speed of the aircraft if the string makes an angle of 25∘ with respect to the vertical.
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