Homework Help: Math

Posted by BJ on Thursday, May 31, 2012 at 5:53am.

At an airport, a flight controller is in a tower 45m above the ground. She observes an airplane flying at a constant altitude at an angle of elevation of 14 degrees from her line of sight. Seven seconds later, the airplane flies directly overhead.

If the airplane has a constant speed of 370 KM/H, what distance, in meters, did it cover between the time the flight controller first observed the airplane to when it passed overhead?"

Math - drwls, Thursday, May 31, 2012 at 7:11am
First convert 370 km/h to 102.8 m/s.
Multiply that by 7 seconds for the answer, 719 m. You don't need the initial elevation angle nor the tower height.

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