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Physics I
Vectors
Question | Answer |
---|---|
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 |