Tag: Science / Dot Physics

The Surprisingly Cool Physics of Pushing a Block Against a Wall

The Surprisingly Cool Physics of Pushing a Block Against a Wall

This is a cooler physics problem than I initially realized. It goes something like this. A block has a mass of 1 kg and is placed on a vertical wall such that the coefficient of static friction is 0.5. With what magnitude force do you […]

The Many Shades of Bad Physics

The Many Shades of Bad Physics

What happens when you see bad physics in the world? Does it make you angry? Does it make you laugh? Do you have to hold back a tidal wave of “well, actuallys” because of the overwhelming wrongness? Some might feel that way, but I think […]

Physics Face-off: The Momentum Principle vs. Newton’s 2nd Law

Physics Face-off: The Momentum Principle vs. Newton’s 2nd Law

Consider the following physics problem. An object with a mass of 1 kg and a velocity of 1 m/s in the x-direction has a net force of 1 Newton pushing on it (also in the x-direction). What will the velocity of the object be after […]

The Wild Physics of a Firefighter’s Window Catch

The Wild Physics of a Firefighter’s Window Catch

Are superheroes real? Maybe. In this recently released video, a firefighter in Latvia catches a man falling past a window. Let me tell you something. I have a fairly reasonable understanding of physics and this catch looks close to being impossible—but it’s real. Here is […]

*The Expanse*’s Epstein Drive Has Some Awesome Physics Baked In

*The Expanse*’s Epstein Drive Has Some Awesome Physics Baked In

Maybe you thought my previous post on the crushing g-force of the Epstein drive from The Expanse would be the end of that. Wrong. This is such great clip, I have to do more. In case you missed it, let me tell you what’s going […]

The Physics of Accelerating Spacecraft in *The Expanse*

The Physics of Accelerating Spacecraft in *The Expanse*

[embedded content] If you like science fiction, I can recommend a show for you—The Expanse. It takes place in the not-so-distant future all right here in our own solar system. There are no pew-pew lasers or faster-than-light space travel. When humans are on a spacecraft, […]

The Physics of How a Mirror Creates a Virtual World

The Physics of How a Mirror Creates a Virtual World

Go find a makeup mirror. There’s a good chance you have one in the bathroom. You know the type—it has surface that shows you a zoomed-in image of your face. If you have one nearby, you can use this for your physics homework to show […]

The Physics of NASA’s New Mars Helicopter

The Physics of NASA’s New Mars Helicopter

  Sending a rover to Mars is cool—but sending one to Mars along with a helicopter is even better. Yes, that is the plan for the next NASA Mars rover, scheduled for 2020. The idea is to have a driving rover that brings along a […]

The Physics of a Tesla Model X Towing a Boeing 787

The Physics of a Tesla Model X Towing a Boeing 787

This is pretty cool—an electric car pulling a full size commercial aircraft, apparently for the first time ever. In particular, it is a Tesla Model X pulling a Quantas Boeing 787. There are a million reasons this is cool, but I think we should just […]

Fun Ideas That Keep Kids Learning Even After School’s Out

Fun Ideas That Keep Kids Learning Even After School’s Out

For some people, summer means warmer weather and outdoor activities. But what about the kids that are out of school? What will they do all summer? For most parents, they just want their kids to do something other than video games or watching endless videos. […]