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CPO Chapter 3 terms

Motion and Force

QuestionAnswer
Air friction the opposing force created by objects moving through air.
Equilibrium occurs when the forces on an object are balanced
Force a push or pull
Friction the force that results from relative motion between objects (like the wheel and axle of a car).
Gravity the attractive force that exists between any two objects that have mass.
Inertia the reluctance of a body to change its state of motion.
Law of conservation of momentum states that as long as interacting objects are not influenced by outside forces (like friction), their momentum before the interaction will equal their momentum after the interaction.
Mass a measure of the inertia of an object; the amount of matter an object has.
Momentum the mass of an object multiplied by its speed or velocity.
Net force the amount of force that overcomes an opposing force to cause motion.
Newton a unit of force; the abbreviation is N.
Newton's first law of motion states any object at rest will remain at rest unless acted on by an unbalanced force; an object in motion continues with constant speed and direction in a straight line unless acted on by an unbalanced force.
Newton's second law of motion states that the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.
Newton's third law of motion for every action , there is an equal and opposite reaction.
Pounds English system unit of force.
Rolling friction resistance created when one object rolls over another one.
Sliding friction resistance created when two surfaces rub against one another.
Viscous friction resistance created by objects moving in water or other fluids.
Weight a force created by gravity.
Created by: tjmelia
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