The force of friction
Controlled variables are measured by,
How far we pulled the blocks
How fast we pulled the blocks
The surface type
Manipulated variables are measured by
Surface area I learned that different surface types make more/less friction, they don't all have the same friction measurement.
I learned that the more weight on a surface type will make more friction because it is heavier.
I learned that if you put more surface area on a surface type the friction stays almost same!
When you pull a block across why does it measure friction?
It measures friction because when you pull a block across a surface area the friction goes the opposite way!