Sometimes, when I'm proctoring an exam, I end up with a little too much time on my hands. So I play with stuff—whatever I've got on hand. In this case, it was one of those clicky pens. It had stopped ...

As the name suggests, horizontal motion occurs when the object is thrown horizontally, meaning it starts with zero vertical velocity. The only force acting on the object is gravity, causing it to ...

The terms projectile and trajectory are introduced. Projectile Motion: The terms projectile and trajectory are introduced. Students learn to describe horizontal and vertical components of a projectile ...