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Q: Why do you need a reference to know that an object is in motion?
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Is a reference point the object to which we compare another object's motion?

Yes, that is one meaning of "reference point", although the reference point need not be an object, but may simply be a location.


Why do you need to include a reference point when you describe the motion of an object?

Motion is relative. There must be something to compare it to.


Is a rose bush and object in motion?

no not really but it for shure does need a motion to this you know like a motion.


How do you know motion occurred?

you need to know where the object is and where it is after a period of time


When you know both the speed and direction of an object's while it is in motion do you know the acceleration of the object?

No. For you to know acceleration you need the rate of change of speed and the direction.


What else do you need to know to find an object besides the reference point and distance?

One needs the direction.


Why do you need a reference point to know an object is moving?

A reference point is part of the definition of movement or displacement. The difference, over time, of your distance or orientation to a given reference point or points defines movement.


Why do you need a reference point to know if an object moving?

A reference point is part of the definition of movement or displacement. The difference, over time, of your distance or orientation to a given reference point or points defines movement.


What is A object that stays in place and to which a moving object is compared is a?

A reference frame? Of course, a reference frame need not be a specific object, so I'm not really sure...


To locate an object what do you need to know?

to locate an object what do you need to know?


What do you need to find the speed of an object in motion?

radar gun


What is needed to change an object's state of motion?

With changing the "state of motion", I assume you want to change the velocity. What you need here is a force, applied on the object. The amount of acceleration is given by Newton's Second Law.