# Shared Flashcard Set

## Details

Chapter 4 vocabulary
Introduction to Physics
19
Physics
10/16/2007

Term
 Force(section 1)
Definition
 a push or a pull exerted on an object
Term
 net force(section1)
Definition
 the overall force on an object when all the individual forces acting on an object are added together
Term
 unbalanced forces(section 1)
Definition
 a nonzero net force that changes an object's motion
Term
 balanced forces(section 1)
Definition
 equal forces acting on an object in opposite directions
Term
 inertia(section 1)
Definition
 the tendency of a moving object to continue in a straight line or of an stationary object to remain in place
Term
 newton(section 2)
Definition
 a unit of measure that equals the force required to accelerate one kilogram of mass at a rate of one meter per second per second.
Term
 friction(section 3)
Definition
 a force that one surface exerts on another when the two rub against each other
Term
 sliding friction(section 3)
Definition
 friction that occurs when one solid surface slides over another
Term
 rolling friction(section 3)
Definition
 the friction that occurs when an object rolls over a surface
Term
 fluid friction(section 3)
Definition
 the friction that occurs when an object moves through a fluid
Term
 gravity(section 3)
Definition
 the force that pulls objects toward each other
Term
 free fall(section 3)
Definition
 the motion of a falling object when the only force acting on it is gravity
Term
 projectile(section 3)
Definition
 an object that is thrown
Term
 air resistance(section 3)
Definition
 the fluid friction experienced by objects falling through air
Term
 terminal velocity(section 3)
Definition
 the maximum velocity a falling object achieves
Term
 law of universal gravitation(section 3)
Definition
 the force of gravity acts between all objects in the universe
Term
 momentum(section 4)
Definition
 the product of an object's mass and velocity
Term
 law of conservation of momentum(section 4)
Definition
 the rule that the total momentum of objects in an interaction does not change
Term
 equilbrium(section 5)
Definition
 a state in which opposing forces in a system are equally balanced or stable
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