2007-05-18 06:08:12 · 7 answers · asked by ohmygodicantfindanid 1 in Science & Mathematics ➔ Physics
Yes, pointing north in the usual interpretation of that, means completely unchanging in the x directions. There might be an argument about just what qualifies as an x component if the vector were anywhere but on the y-axis, but since it is, there is no x component even for those who like to split hairs.
2007-05-18 06:17:29 · answer #1 · answered by Mike T 2 · 0⤊ 0⤋
By saying the vector is aligned with the y-axis you are saying the x component is zero. That is the definition of the y-axis, all points who's x component is zero. The fact that the y-axis happens to be oriented north doesn't change the answer. I also assume you are talking about a 2 dimensional problem since you didnt mention a z axis which generally points 'out of the paper' directly to the sky. In that case, the all points who's x value is zero would not just be a line, it would be a plane (visualize a wall) along the y axis.
2007-05-18 14:07:16 · answer #2 · answered by mpgmich 2 · 0⤊ 0⤋
The component of a vector A in a direction making angle theta is Acos theta
Angle theta between x- axis and y -axis is 90 degree.
cos 90 degree= zero
When a vector (A) points north,along the y -axis , its component along x -axis (Acos90) will be zero.
2007-05-18 13:48:07 · answer #3 · answered by ukmudgal 6 · 0⤊ 0⤋
Yes. Even if it is placed some where else on the x-axis (parallel to the y-axis), if we try to derive its x-component, it will be 0.
2007-05-18 13:27:13 · answer #4 · answered by Swamy 7 · 0⤊ 0⤋
heck yes.
If it's ON the y-axis then it's x-component must surely be zero
2007-05-18 13:12:20 · answer #5 · answered by mark r 4 · 1⤊ 0⤋
yes
2007-05-18 13:45:58 · answer #6 · answered by Anonymous · 0⤊ 0⤋
You're right.
2007-05-18 13:10:35 · answer #7 · answered by duretteg 3 · 0⤊ 0⤋