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.
Sarah drops a penny from a height of 1250 feet. I will be using h for height and t for time in seconds, this will be modeled in the function h = -16t^2 + 1250. How will it take for Sarah’s penny to re
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random