Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
%7By''(t) %3D -g %2B y'(t)%5E2 k%2Cy'(0) %3D 0%2Cy(0) %3D h%7D
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random