Two-deminsional motion problem: HELP

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two-deminsional motion problem: HELP!

Homework Statement



In microgravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in the figure, the aircraft climbs from 24,000 ft to 28,210 ft, where it enters a parabola with a velocity of 150 m/s at 45.0° nose high and exits with velocity 150 m/s at 45.0° nose low. During this portion of the flight, the aircraft and objects inside its padded cabin are in free-fall; astronauts and equipment float freely as if there were no gravity.

What is the aircraft's altitude at the top of the maneuver?

Homework Equations





The Attempt at a Solution



I tried using the basic kinematics equations but I am not ending up with the correct altitude
 
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i have already tried that
 


It's hard to tell where you've gone wrong without seeing your attempt at the solution.