If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Projectile launcher

0 energy points

Update and modify your ping pong ball launcher

We upgrade our ping pong ball launcher to make it safer, more accurate and more reliable. Created by Karl Wendt.