y=(((y-2000-((15*y*9.82)/5200))*.11)+2000+((15*y*9.82)/5200))*e^(5000/(420*9.82))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.