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### 17 Cards in this Set

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 weight a force determined by mass of an object times gravity w=mg net force the total sum of forces acting on a given object pressure the amount of force per unit area, measured in pascals (newtons per square meter pascal the unit of pressure = one newton per square meter fluid any material that flows vector can describe: velocity acceleration force displacement motion Pascal's principle the idea that force in a fluid is transferable to all parts of that fluid normal force any force that acts perpendicular to the plane of motion coeffficient of friction the number associated with the interaction of two surfaces that determines frictional force terminal speed the maximum speed reached by a falling objecct slowed with air resistance (drag) momentum mass x velocity impulse the change in momentum of an object law of conservation of momentum in closed system (no net external forces) the momentum does not change action force the force of an object as it makes contact with another (initiating force) newton's 3rd law the law that describes the effect of different object on eachother in terms of force (for every action there is n equal and opposite reaction) Newton's 2nd law the acceleration produced by a net for on an object is directly proportional to the magnitude of the net force and inversely proportional to the mass of the object newton's 1st law every object continues in a state of rest, or of motion in a straight line at a constant speed, unless it is compelled to change that state by forces exerted upon it