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

The reason we know lightning precedes thunder (besides watching the occasional movie) is that sound moves slower than light. That delay give us an idea … Read More

Electricity is an invisible thing; yet you might not realize just how much force is present between tiny charges. Those seemingly annoying static shocks is … Read More

Suppose two teams pull on an identical rope in opposite directions equally hard. Nothing happen. The rope doesn’t budge. It feels as if no forces … Read More

By the time you get that string pulled back right, the arrow’s going. But the felt quickness isn’t a sign of everything that occurs when … Read More