Can the change of position of an object be considered as an indicator of an interaction? Explain and show your detailed work, using only words without any calculations or numbers. Use your own words. (Your answer should not be less than 4 lines)
This question emphasizes on the concept of inertia.
If the body/particle is at rest in some frame of reference and the frame is intertial then net force on the particle is zero.
In otherwords there is no interaction or the sum total of interaction is zero. Now in this case when you see the change in position then we must say that some interaction is there.
Now we will take the case when the particle / body is already in motion, in some inertial frame of reference, then due to inertia of motion it will continue moving in the direction of initial velocity and will change its position continuously without any interaction. And clearly either no interaction has taken place whatsoever or the sum total of interaction is zero.
from the above discussion, it can be said that the change in position of object is NOT the indicator of interaction.
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