Andrew Duff

Using the BallBounceHD app, you can place between 1 and 100 balls on the screen and watch them as they move around, bouncing off the sides and collidi …

The Waves app consists of a collection of five different simulations that deal with traveling waves, standing waves, and beats. There are two differen …

The HangTime app is aimed at football fans who are interested in the kicking game in particular, although it can also be used to analyze passes, too.L …

The Projectile app is a tutorial aimed at understanding projectile motion, which is two-dimensional motion under the influence of gravity. This app is …

The MassSpring app is a basic physics lab, in which a block is attached to an ideal spring. You can set the mass of the block, the spring constant of …

The Collisions1D app is a basic physics lab, in which two objects (a red ball and a blue ball) collide with one another in one dimension. You can set …

The ColorMix application is a simple app designed to show how you can make any color you like just by adding three colors together. The app can do add …

With the BallsBounce app, you can place between 1 and 50 balls on the screen and then sit back to watch them bounce off the walls and collide with one …