This week we began learning about friction and how to make force maps. Friction is a resistance for objects to slide past each other. We learned this by watching dry ice go across a table. The dry ice has no resistance because it isn’t actually touching the table meaning there isn't any friction. The ice emits off a gas which lifts it off the table. Thus no friction is created, in order to make friction you need to have something touching another thing. They need to be touching each other. We also watched a video on gravity rooms they work by having something on a ramp so your mind plays tricks on itself and you have no idea what to think. Water will go at an angle, you will walk on an angle and everything seems off. This is related back to what we are learning about forces. Forces are just something either pushing or pulling something. Gravity is just Earth pulling on us. That’s why everything has to go down; the forces acting upon it make it do that. But the way we are able to stand up is because our force pushing down is equal to how much earth is pushing us down. If one wasn’t perfectly equal then we wouldn’t be able to stand or the opposite we would catapult into the sky.
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