+Ab0uT me+
NAme: Julie Anne M. Cabuhat
Nicknames: Jana/ Julie...and others.
Birthday: 07/17/92
Age: 14
School: Masci
Currently in: high school
Section: Proud Darwinian :D
+Expectations+
[learn new things in physics
[get a high grade in this subject *sana lng*
[ apply what i have learned in this subject in my everyday routines
+Old books+
June 2007
July 2007
August 2007
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Saturday, June 23, 2007
I almost forgot, sir mendoza asked us to put the steps on the analytical and graphical method of getting vectors on our blogs. So before i forget, here it is: Component Method 1. To add vector B to vector A, first draw A on a piece of graphing paper to some scale, such as 1 cm=1 m, and so that its direction is specified relative a coordinate system. 2. Then draw vector B to the same scale with the tail of B starting at the tip of A. 3. Vector B must be drawn along the direction that makes the proper angle relative vector A. 4. The resultant vector R = A + B is the vector drawn from the tail of A to the tip of B.
Graphical Method 1. Consider a vector A in a rectangular coordinate system. A can be expressed as the sum of two vectors: Ax, parallel to the x-axis; and Ay, parallel to the y-axis. 2. From the definitions of sine and cosine, we see that cos = Ax / A and sin = Ay / A, so the components of A are Ax = A cos and Ay sin. These components form two sides of a right triangle having a hypotenuse with magnitude A. 3. To solve for the angle , which is measured from the positive x-axis by convection, we can write it in a form: = tan-1 ( Ay / Ax ).
So that's that, til next week! ~toodles!:D
[jana[ rants about physics at 4:29 AM
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+links+
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