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# Physics I

### Vectors

Given a vector V at an angle, you can find? x and y components
V(x)= Vcos@
V(y)= Vsin@
Hypotenuse of right triangle has to be ______ than _______ but _______ than sum of leg. has to be BIGGER than EITHER LEGS but LESS than sum of leg
List Vector quantity displacement, velocity, acceleration, force, momentum, electric field, megnetic field, and weight
Weight is force of gravity
Weight is scalar or vector? vector
Mass is scalar or vector? scalar
Vector multiplication has two forms? scalar and vector
Scalar multiplication is DOT product (A dot B = AB cos@)
In dot product, smaller angle _______ their dot product greater
Vector multiplication is (A X B = AB sin@ n) n is unit vector perpendicular between 2 vectors,2 vectors multiplies to produce 3rd vector perpendicular to both original vector
right hand rule (cross product) curl fingers via small angle
curl clockwise are in or out of page into the page
curl counter-clockwise are in or out of page out of the page
Vector Leftward direction, below x axis has negative magnitude
Vector Rightward direction, above x axis has positive magnitude
Created by: jojussang on 2010-07-28