Forces (Science Experiments)
Round and round we go
Centripetal Action: What is the relationship between distance and force in circular motion?
A forceA physical interaction (pushing or pulling) tending to change the state of motion (velocity) of an object. causes or changes an object's motion: It is a push or pull on an object. Forces have both a size and a direction. Forces also work in pairs: In order for a force to occur there must be an interaction between two objects. For example, when throwing a boomerang a person applies a force to the object that makes it move. Weightlifting exerts a force on the weight to pull it upward. These are forces that occur by physical contact between the two objects.
Yet forces also occur upon a person who is standing still. Forces are, in fact, occurring on everyone and everything on Earth, along with celestial objects. In these forces, two interacting objects exert a push or pull with no physical contact between them. An example of this force is . Gravity is the force of attraction between any two objects in the universe.
(The entire section is 4592 words.)
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