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Tuesday, January 24, 2012

Forces and Motion #1: The Basics

Basic Terms:

Kinematics: The analysis of the motion of an object without considering the forces acting on it
Dynamics: The study of the motion of an object with considerations of the object's mass and the forces acting on it
Mechanics: The study of the motions with considerations of both kinematics and dynamics.

Scalar Quantity: Any quantity that can be defined by a single number and a unit of measure (e.g., mass, distance, speed)
Vector Quantity: Any quantity that must be defined by using a number, a unit of measure, and a direction (e.g., velocity, which you have to specify the direction).
Position: The location of an object with respect to the reference point. It's a vector quantity.