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physicsss
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Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from Dulles Airport. (see pic. attached) She notices that the string makes an angle of 20° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 14.5 seconds. Estimate the takeoff speed of the aircraft.
I have no idea where to start...
I have no idea where to start...
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