An azimuth
Ratio
opposite
Their DIFFERENCE will be zero if and only if they have the SAME direction.
Zero. There was no time measured that long ago.
In the system of Cartesian coordinates in geometry, the x-coordinate is the location in the horizontal direction (nominally left and right) while the y-coordinate is in the vertical direction (up and down). The line along which x values are measured is the x-axis. An x-coordinate to the left of center (zero) is negative, and to the right is positive. (In three dimensions, the x and y form a horizontal plane and the z coordinate is measured along the vertical axis.)
Yes, absolute zero is zero degrees Kelvin.
No, the zero vector has no direction as it does not have magnitude or point in any specific direction. It represents a point in space with no displacement.
Zero Kelvin is -273.15oC
There is almost never an "IF". All non-zero vectors have a constant, specified direction. Only a zero-vector has a direction which is unspecified.
The zero-vector has no direction.
Yes. Velocity is speed per unit of time with a direction vector telling you which way the object in question is moving. Acceleration is a change in velocity - in any part of velocity. If something like, say, a rock is in deep space (a zillion light years from anything) and it's moving along unaffected by any gravity or other forces, it has some velocity (some speed in a given direction, or is moving at some distance per unit of time in a given direction), but it isn't changing speed or direction. If something is moving without changing its speed or its direction (either of which requires a force to act on the object - to accelerate the object), it has zero acceleration. Such an object is said to have a constant velocity and will have zero acceleration. Certainly if an object is not moving, it has zero velocity and zero acceleration, but that's probably not what is being asked. It has velocity (zero) and no acceleration. To recap, an object can have a non-zero velocity and zero acceleration.
The equator
If the velocity is zero, the object is not moving. So if it moves at all, it is changing direction.
It can be measured from zero to the highest value vertically.This can be done with specific meters depending what you are measuring
-- Its magnitude is 1/2 of [ (the speed at 2 seconds) minus (the speed at zero) ]. -- Its direction is 1/2 of [ (the direction at 2 seconds) minus (the direction at zero) ].
-273 C
I measured it to be zero, but need some confirmation.