# Physics

 The flashcards below were created by user julidei on FreezingBlue Flashcards. Inertia The property of things to resist changes in motion. Mass The quantity of matter in an object. More specifically, it is the measure of the inertia or sluggisshness that an object exhibits in response to any effort made to start it, stop it, deflect it, or change its state of motion in any way. Kilogram The unit of mass. One kilogram (kg) is the mass of 1 liter (L) of water at 4 degrees C Weight Simply stated, the force due to gravityon an object. More specifically, the gravitational force with which a body presses against a supporting surface. Force Simply stated, a push or pull Newton The scientific unit of force Net Force The combination of all forces that act on an object. Vector Quantity A quantity that specifies direction as well as magnitude. Support Force The force that supports an object against gravity, often called the normal force. Equilibrium Rule The vector sum of forces acting on a nonaccelerating object equals zero Friction The resistive force that opposes the motion or attempted motion of an object through a fluid or past another object with which it is in contact. Air Resistance The force of friction acting on an object due to its motion through air. Speed The distance traveled per time. Velocity The speed of an object with specification of its direction or motion. Acceleration The rate at which velocity changes with time; the change in velocity may be in magnitude, or in direction, or in both. It is usually measured in m/s squared Hang Time The time that one's feet are off the ground during a vertical jump. Authorjulidei ID6578 Card SetPhysics Descriptionch 1 Updated2010-02-10T20:54:51Z Show Answers