Scalar quantities have only magnitude (size). For example, 11 m and 15 m s-1 are both scalar quantities.

A red and a blue snooker ball both have a mass of 160 g. They collide with speeds and directions as shown in this diagram. The following steps show you how to calculate the velocity of the red ball ...

One of the most fundamental equations in physics, Newton’s Second Law of Motion, was formulated by Sir Isaac Newton in 1687. It states that the force () acting on an object is equal to its mass () ...