Opposite Rays
Because we can't see the image you're referring to, we can't give the answer to which ray is opposite to BA. However, we can help. Opposite rays are two rays that both start from a common point and go off in exactly opposite directions. So, if there are two rays (BA and BC) with a common endpoint (B) going in different directions, they are called opposite rays.
No, because velocity includes direction as well as speed.In order for the velocities to be the same, they would have to go the same speed in the same direction.
because one is a troll
Yes, when magnets repel each other, they will move in opposite directions. This is due to the magnetic force pushing the magnets away from each other along the lines of magnetic force.
If the two forces acting on an object are equal in magnitude and opposite in direction, they are balanced. If the forces are unequal, they are unbalanced.
Yes, just reverse the blades on one of the windmills. Another possibility could involve the *size* of the property referred to. For example windmills located at opposite ends of Austrialia might well turn in different directions.
A decagon cannot be a parallelogram. In a parallelogram, the opposite sides are parallel to each other. in a decagon, some of the opposite sides would go in different directions.
In chemical formulas, the arrows represent the way of the reaction. Two opposing arrows mean that the reaction will go in both directions, until its specific equilibrum is reached.
Because that's what "absolute value" means. It's the size of the number regardless of which direction the number goes ... positive or negative. +42 and -42 go in opposite directions, but they're the same size. So they have the same absolute value.
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You cannot, since there is no information on how far along you go. In actual fact, a line has no end-points, it is infinite in both directions.
Honestly a ray does because a ray has one endpoint and it does go in one direction like forever