distance

Home » distance

What is work? Physics definitions

By |2018-05-31T11:49:15+00:00August 17th, 2017|Physics|

Ancient Egyptian cattle plowing (Louvre Museum, Paris) You might think you know what work is, like homework, or having to pick up your room, right? But to scientists, work has a more definite meaning: work is force x distance. That means that you can measure work by measuring how much force, or energy, [...]

Levers – Simple machines – Physics

By |2018-05-31T11:49:33+00:00August 17th, 2017|Physics|

Levers: An orangutan child using a stick as a lever What is a lever? A lever is basically just a long stick that you push or pull against a fulcrum - a fixed object - to move something. A lever helps you move something heavy, or make something go fast. The earliest levers developed [...]