Source: NOVA: "Galileo's Battle for the Heavens" This resource was adapted from NOVA: "Galileo's Battle for the Heavens." Galileo thought a great deal about the motion of falling objects. Specifically ...

We know “what goes up must come down.” But WHY? "Drop" in to find out! We know “what goes up must come down.” But WHY? Drop in to learn about the gravitational forces like acceleration and air ...

Friction is a force that resists the motion of one object against another. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists began ...

(Nanowerk Spotlight) Life as we know it is dominated by friction, the interaction between moving objects. Friction controls our everyday lives, from letting us walk to work, to holding a cup of tea.