Momentum

Momentum is the tendency to keep moving once you’re going. So, build up some momentum in your physics learning, and keep on going… (more…)

Balanced and Unbalanced Forces

Things start to really get interesting when forces start to work together… or against each other. That’s how things happen (and get stopped) in the real world. Learn more about balanced and unbalanced forces… (more…)

Inertia

When something’s stopped, it’s not going to move unless something moves it! That’s inertia… and once something gets going, it’s going to keep on going until something stops it. It’s all physics! Learn more about inertia… (more…)

Acceleration

Physics is hard enough when things go at one speed… what about while they’re speeding up and slowing down? Learn more about the important physics concept of acceleration… (more…)

Gravity

Gravity’s all around us everyday, and we don’t think a lot about it! It’s what keeps our feet on the Earth… Explore your world by learning more about gravity… (more…)

Friction

When two things rub against each other, that causes friction. It’s why we can’t slide across asphalt like we slide across ice. Learn more about this important force… (more…)

What Is a Force?

A force is a push or a pull… it’s what makes something go–change speed, change direction, start when it’s stopped or stop when it’s going. Learn more about the basics of forces… (more…)

What Is Work?

We all do work… even lifting a pencil is work! It expends energy… and it changes matter. So, what really is work, from a physics point of view? Read more… (more…)

Simple Machines

Simple machines help people do work. You’d be surprised what everyday items are actually simple machines! Simple machines include pulleys, levers, incline planes (ramps), wheels and axles, wedges, and screws. Learn about simple machines: (more…)

Newton’s Third Law of Motion…Action and Reaction

“For every action, there is an equal and opposite reaction.” You might have heard something about this law of physics. What does it mean? How does it affect your everyday life? Learn more: (more…)