# CFI Physics Quiz 1

 Displacement change of the position. The final position minus the initial position Avgerage Velocity The average distance over an average time Acceleration Rate of change of the velocity Free Fall No forces act on an object other than the gravitational force that makes the object fall Vector Have both magnitude and direction. Force A push or pull that one object exerts on another Weight Magnitude of the gravitational force that a planet or moon exterts on a nearby object Inertia Resistance to changes in velocity Kinetic Friction When the two objects are slipping or sliding across one another, as when a loose shingl slides down a roof. Static friction No slipping or sliding occurs, as between the tires of a car parked on a hill and the road surface Conservation Law Physical law that identifies a quantity that does not change wth time Kinetic energy Energy due to motion Potential Energy Stored energy due to interaction Translation Motion of an object in which any point of the object moves with the same velocity as any other point. (object does not rotate or change shape) Work Energy transfer that occurs when a force acts on an object that moves Mechanical Energy the sum of the kinetic and potential energies Power Rate a which work is performed or evergy is converted Linear Momentum Product of mass and velocity Impulse Product of a vector and a positive scalar Center of Mass An average location of the system (a point) Torque Role in otation that force itself plays in translation. A measure of how effective a given force is at twisting or turning something Center of Gravity Total force of gravity can be considered to act at a single point Fluids materials that flow and include both liquids and gases. Nearly incompressible Pressure Force per unti area is the same for any orientation of the surface Density mass per unit volume Buoyant force total force on an object due to fluid Archimedes Principle The buoyant force on an object is equal to the weight of an equal volume of fluid Bernoulli Effect Fluid flows faster where the pressure is lower Surface tension the force per unit lenght with which the surface pulls in its edge AuthorBrettIRB ID63389 Card SetCFI Physics Quiz 1 DescriptionVoc Terms for quiz Updated2011-02-08T20:18:53Z Show Answers