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Motion and Stability (Forces and Motion (Force is an object interaction…
Motion and Stability
Forces and Motion
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When the net force acting upon an object is not zero, motion will occur.
Newton's third law states that for every action, there is an equal and opposite reaction. In other words, when a force exists between two objects, they experience a force of equal magnitude, but in opposite directions.
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As the mass of an object increases, an equal change in force is necessary in order to retain the same pattern of motion.
Momentum is the quantity of motion that an object has, and is equal to the mass times the velocity of an object.
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Types of Interactions
All forces can be classified into four forms of interactions, including gravitational, electromagnetic, strong, and weak nuclear interactions.
Due to force fields, gravitational and electromagnetic forces do not need to be in direct contact with one another in order for interactions to occur.
The magnitude of a gravitational force is directly related to the mass of an object. These forces become significant when the masses of objects have large dimensions (ex. the Earth).
Electromagnetic forces can be attractive or repulsive depending on magnitudes and other variables, including current, electric charge, distance, and the intensity of the magnetic field.
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