Kinetic Model of Matter Take a moment to feel the mouse or phone in your hand right now. It may not feel like it is moving, but the molecules inside of it are constantly…

Circular motion is everywhere around us, from the spinning of the wheels on your bicycle to the fans in your living room. Studying the way that objects undergo motion in a circle thus has…

Energy The energy of a system is defined as its ability to do work. The “work” here refers to the precise definition of “work done” in physics, which is the product of the amount…

In everyday life, the terms “work done” and “power” can mean a lot of things. You may say that you “got a lot of work done today” or “that was a very powerful speech”.…

Pressure If you have ever hammered a nail or drank from a straw, you have made use of pressure to accomplish a task. A lot of the technology we use today work based on…

When a force is applied to an object connected to a pivot, it can cause the object to turn about that pivot. This process is referred to as the turning effect or moment of…

Forces are all around us. Without them, you would not be able to pick up a pen, type on a keyboard, or even walk. As such, studying forces is essential to our understanding of…

Linear momentum Linear momentum (not to be confused with angular momentum) is a vector quantity that represents an object’s mass, as well as its magnitude and direction of motion. As such, you can think…

To the layman, speed, velocity and acceleration may just sound like different ways to describe how fast you are going, but they actually mean very different things. The distinction between each term is essential…