Physics has a lot of different concepts to it. Different types of theories and laws. If you really think about it everything has physics. Physics is the nature and knowledge that it encompasses. Everything that has physics, has math. Physics is the language of math. For example, posters tapped against a wall. There are all kinds of forces to that, forces like contact force, Gravity, and normal force. Gravity exist among all objects in the universe. Like in the wall and the posters tapped against it. The two objects attract gravity towards each other. Connected to the example of the wall, and gravity, normal force is the supported force upon the two objects, because they are in contact with one another. Which also leads to contact forces, physics all comes back together as one big theory, even if it is three different things.
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Potential energy plays a big roll in a rollercoasters. All rollercoasters have the highest point or lowest point where the cart is at rest but either low or high. That is where potential energy is. Potential energy is the energy which results in position. Usually the most potential energy in a roller coaster is when it is about to start. The way that this type of energy is calculated and measured in P=MGH. M, being Mass, G being Gravity, which is always constant and is 9.81 N/kg and H being height of that point, and that is measure in
Potential energy plays a big roll in a rollercoasters. All rollercoasters have the highest point or lowest point where the cart is at rest but either low or high. That is where potential energy is. Potential energy is the energy which results in position. Usually the most potential energy in a roller coaster is when it is about to start. The way that this type of energy is calculated and measured in P=MGH. M, being Mass, G being Gravity, which is always constant and is 9.81 N/kg and H being height of that point, and that is measure in