(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Jean, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from Dulles Airport. She notices that the string makes an angle of 21° with respect to the vertical while the aircraft accelerates for takeoff, which takes about 16 seconds. Estimate the takeoff speed of the aircraft.

2. Relevant equations

Fnet=ma

3. The attempt at a solution

In my class we've just been these problems with 2 variables and I'm confused about finding the first part of the problem so that I can do the later half. I know that since I have time I'm trying to find acceleration or velocity but I don't know where to begin.

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# Homework Help: Using an angle and time to find Acceleration

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