Vis viva

Vis viva is a really fancy way of talking about energy. You know how when you play with your toys, they move around and bump into things? That's because they have energy - or vis viva - that makes them go.

Think about how it feels when you ride your bike really fast. You can feel the rush of air on your face and your legs moving super fast, right? Well, that feeling is the vis viva of your bike and you.

Vis viva is really important because it helps things move and work. Whether it's a car driving down the road or a ball bouncing on the ground, everything needs vis viva to happen.