Details Title: Ch. 1 Physics vocab Description: Basic Physics vocabulary Total Flash Cards: 22 Created: 08/21/2006 17:40:59		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 Physics Definition The branch of science with the ultimate laws that govern the structure of the universe and the forms of matter and enegy and their interaction. Term Mechanics Definition The branch of physiscs that deals with the motion of objects and the forces that change it Term Kinematics Definition A branch of mechanics which describes the motion of an object without ecplicit reference to the forces that act upon an object. Term Physical quantity Definition A quantity that can be used to describe a physical process or/and physical phenomenon. Term Scalar physical quantity Definition Can be described by a magnitutde ( number and unit ) Term Vector physical quantity Definition can be described by a magnituide and a direction Term Rectangular components of a vector Definition Two perpendicular vectors whose vector sum is equal to the original vector. Term International system of Units Definition base units are a meter= length, kilogram = mass, second = time, mole = amount ofmatter, kelvin = temp. ampere = electric current candela = luminous intensity. Term Frame of reference Definition an object with a coordinate system that can be used to define and describe motion. Term Mechanical motion Definition change in position of an object with respect to the frame of reference. Term Displacement Definition a vector representing the change in position of an object, drawn from the intial to the final position of an object. Term Distance Definition the length of a path along an object Term Time interval Definition difference in time between two clock readings Term Velocity and Speed Definition Velocity - the rate of motion in a given direction of the rate of displacement Speed- the rate of motion / rate of distance Term Instantaneous velocity Definition the rate of a displacement at a particular moment of time and a particular point of a path of motion. Term Average velocity and average speed Definition Average velocity is a vector physical quantity that is equal the ration of a displacement over a timeinterval. Average speed is a scalar physical quantuty that is equal to the ration of a distance over a time interval. Term Acceleration Definition is the rate of velocity Term Path and trajectory Definition Path of motion = is the line along which an object participates in motion. Trajectory = path followed by a projectile Term Free falling motin Definition an idealized motin in gravitational field when air resistance is neglected an acceleration due to gravity is nearly constatnt Term Linear motion Definition a motion of an object whose path of motion is a straight line. Term Projectile motion Definition two dimensional motion of an object in gravitational field when along one dimensiton there is a uniform linear motion and along the second dimension there is a uniformlu accelerated linear motion. Term Range of a projectile Definition a horizontal distance of a projectile