When you slam on the brake, you experience sense of loss, and that’s explained by the work-energy theorem. That sense of loss arises from removal … Read More

Most introductory physics classes treats air as if it doesn’t exist. You toss up a ball at some angle and watch its path follow a … Read More

Whether it’s throwing a basketball into a hoop or tossing a ball for fun in the driveway, there are two invisible forces battling each other … Read More

In a nuclear medicine lab you have vial of tracer that is radioactive. That radioactivity can be used to diagnose things, but over time radiation … Read More

How does it work? Imagine standing atop a tower and dropping a coin on the floor below. You hear the clack as it lands. How … Read More

Every moment of every day, gravity is affecting your life. But unless you’re dropping something, you don’t see it. Every second of your life, you … Read More

When gravity and air resistance equal each other out then an object reaches a point where it doesn’t accelerate anymore. That’s what happens in a … Read More

Drop your smart phone, which lands on tile. You feel your stomach drop before you even look. Your stomach drops as you hear a crack. … Read More

The force between two atoms is immense. Yet the static shock you feel when touching a doorknob is tiny compared to it. But that tiny … Read More

Take, for instance, a slow-moving freight train on a railroad track. Now imagine a bullet flying quickly through the air. Naturaly, we might think that … Read More