Friction
Friction is a force when the two surfaces meet and rub together it can slow you down. Friction can be helpful when you’re on your bike and need to slow down.
Surfaces
Surfaces affect friction. When a marble rolls down something steep it slows down because it has less friction. If there is carpet at the bottom it won’t go as far because carpet is rough. The carpet has more friction. If vinyl is used the marble will go further because it is a smooth surface. The vinyl has less friction
Weight
A heavy marble has less friction because it travels faster. A light marble travels slower because it has more friction. For example: if some one put a marble down a high ramp it will go further because it has more friction then a light marble.
Gradient
The higher the gradient is, the less friction an object will have. The lower the gradient is the more friction you have. For example: if a marble goes down a slope with a high gradient, it will go further because it has less friction.
Summary
When you’re Brakes rub together is makes friction and it can help you. so when your in ur car and need to slow down at a red light, you now know its a thing called friction.
By Caitlin
