It begins with a cartoon of a sleepy locomotive reluctant to move, transitioning into live-action footage of a steam train starting up. Various scenes illustrate Newton’s laws of motion, including a ...

When Isaac Newton inscribed onto parchment his now-famed laws of motion in 1687, he could have only hoped we'd be discussing them three centuries later. Writing in Latin, Newton outlined three ...

Scientists often make measurements. The physical quantities they measure fall into two categories: scalars and vectors. Scalar and vector quantities are treated differently in calculations.