You would use a length/distance unit, such as meters or kilometers.
motion
It works as a reference.
we need a chocolate bar (a twix to be exact), a packet of chips and a bottle of beer!
we need a chocolate bar (a twix to be exact), a packet of chips and a bottle of beer!
I don't think there is a motion, but I think you are talking about vectors. In which case displacement is the measure of the change in position along a straight-line path.
Motion is the change in an object's position.
An object is in motion if it changes position relative to a reference point. Motion is a relative quantity and is expressed in respect to the position of another object. Example: both a car and the Earth are moving (earth is revolving around the sun) but if we express the motion of the car in respect to the Earth, we say the car is moving relative to the Earth. At the same time the earth is moving relative to the sun.
Two objects basically, 1 changing position relative to the other from where its being observed.
If an object is in motion than its position is changing.
Motion is a change in position.
If you are staying in the same position and not moving, then your rate of motion is zero.
A goniometer is a device used to measure the range of motion in a joint. Medical professionals use them to determine the range of motion in human joints, while they can also be used to measure angles in inanimate objects.