Without us even noticing it, our brains are the ultimate multitaskers. The brain’s prefrontal cortex can tell us when it is ...

Imagine a ball bouncing down a flight of stairs. Now think about a cascade of water flowing down those same stairs. The ball ...

Imagine a ball bouncing down a flight of stairs. Now think about a cascade of water flowing down those same stairs.

A new study reveals that our brains separate “stuff” like water and sand from “things” like balls or tools, using specialized circuits in the visual cortex.

For now, I will just say that the moment of inertia depends on the shape, mass, and size of the object. Second, rigid objects need a change in the work-energy principle. A point mass can't rotate.