Details Title: Chapter 2: Motion in 1D Description: From College Physics 7th Edition Total Flash Cards: 13 Created: 07/14/2008 20:26:46		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term Dynamics Definition The study of motion and of physical concepts such as force and mass is called dynamics. Term Kinematics Definition The part of dynamics that describes motion without regard to its causes is called kinematics. Term Frame of reference Definition A frame of reference is a choice of coordinate axes that defines the starting point for measuring any quantity, an essential first step in solving virtually any problems in mechanics. Term Displacement Definition The displacement Δx of an object is defined as its change in position, and is given by   Δx = xf - xi   where the initial position of the object is labeled xi and the final position is xf. Term Vector Definition In general, a vector quantity is characterized by having both a magnitude and a direction. Term Scalar Definition A scalar quantity has a magnitude, but no direction. Term Average speed Definition The average speed of an object over a given time interval is defined as the total distance traveled divided by the total time elapsed   Term Average velocity Definition The average velocity during a time interval is the displacement divided by Term Average velocity Definition The average velocity of an object during the time interval is equal to the slope of the straight line joining the initial and final points on a graph of the object's position versus time. Term Instantaneous velocity Definition The instanteneous velocity is the limit of the average velocity as the time interval becomes infinitesimally small   Term Instanteneous velocity Definition The slope of the line tangent to the position vs. time curve at A is defined to be the instantaneous velocity at that time. Term Instantaneous speed Definition The instantaneous speed of an object, which is a scalar quantity, is defined as the magnitude of the instantaneous velocity. Term Average acceleration Definition The average acceleration during the time interval is the change in velocity divided by