PHYS 1500 Lecture Notes - Lecture 3: Hypotenuse, Pythagorean Theorem, Italic Type
Document Summary
Vector quantity is written with arrow over letter. Magnitude of vector is represented by italic type, which can also represent scalar quantity. If two vectors have the same magnitude and same direction they are equal to one another. ^^this enables us to move a vector parallel to itself without changing anything. When two vectors are added their sum is independent of the order of addition=commutative law of addition: ex. More than just one vector can be added, but make sure to keep them in their original order. Negative of a vector is the vector that equals zero when added to a. A and -a have same magnitude, but different directions. Multiplying or dividing a vector by a scalar. Ex: if vector a is multiplied by the scalar number 3 it will equal 3a which is a vector with a magnitude. 3x"s that of a and pointing in same direction.