dot physics

Physics questions are the most fun when people don't immediately agree on the answer. What feels intuitive or…

That expression doesn't look nice, but at least now the energy calculation is in terms of things that we actually…

Since the vehicle is moving up the incline and gravity only pulls straight down, there is a component of this force…

If you want to be a Major League Baseball pitcher, you need to be able to throw a ball really fast—like 85 to 100…

The "Monty Hall problem" is a classic example of how games of chance can have surprising results. Here’s a fun way…

There are three forces acting on the debris. First, there's the downward-pulling gravitational force (Fg) due to…

If you drop an object, it will fall. It's a motion that we’ve all seen hundreds of times. We’ve also all seen…

In this case, water starts from a source that's higher than the pump. (That's important.) As this input water moves…

There's your pi. In fact, you can measure the mass, period, and spring constant independently and use this to…

No one wants to deal with that many interactions. Instead, in physics we treat the ball as one thing—and that's…