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NORTHAmended answerLight travels in straight lines.
That is called refraction.
Try straight up.... Or at a wall.
Direction is the straight line locus of points leading from one location to another.
A direct correlation, it appears as a straight line on a graph and occurs when variables are related as y=xk.
I have no idea
The forces acting in a vertical direction or in a straight direction is called vertical force
a road......?
Stand straight. Now point straight up. Point straight ahead. Point straight to your left. Now point in a direction at right angles with all three previous directions: there's your extra dimension.
Displacement.
it is called a ray
It is called a line segement
Vertical means straight up and down,aligned with the direction of gravity. Vertically upward means vertical in the up direction. So if you jump directly straight up that is vertically upward; when you land you are travelling vertically downward.
NORTHAmended answerLight travels in straight lines.
Without more specific information as to the direction of the turn: * Straight up * Straight down * West * East.
Just walk in front of them and then keep walking in a straight direction.
The direction of melody is simply called it's motion.