:p hi
An origin or zero point.
Motion is relative. There must be something to compare it to.
That's right, motion cannot be measured unless you have some frame of reference within which to measure it.
Motion is always relative, depending on the reference point. If a tree is the reference point, then the car zooming past will be moving. But, if you use the car as the reference point, then it seems as though the tree is zooming past.
deflection of moving objects when the motion is described relative to a rotating reference frame.
In simple motion can be described as the movement of any object.
frame of reference
An origin or zero point.
Motion is relative. There must be something to compare it to.
That's right, motion cannot be measured unless you have some frame of reference within which to measure it.
Isaac Newton described three laws of motion.
Motion is always relative, depending on the reference point. If a tree is the reference point, then the car zooming past will be moving. But, if you use the car as the reference point, then it seems as though the tree is zooming past.
deflection of moving objects when the motion is described relative to a rotating reference frame.
It certainly is necessary. Sometimes it may be implied - for example, in practice, quite often planet Earth is used as a frame of reference. But whether it is implied, or explicitly stated, you always need a frame of reference to describe motion, or position.
It is called "reference frame"; and yes, that's the basic idea - related to what will you measure movement.
It is called "reference frame"; and yes, that's the basic idea - related to what will you measure movement.