Question

wether the wall of the classroom are at rest or at motion

Answer 1

the wall of the class room is in rest with respect
to stationary object.but the wall of the class room is in motion with respect to moving object

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Answer 2

Its state of motion is relative. From the frame of reference of a person sitting in the class, the walls are at rest. On the other hand, from the frame of reference of a student who is running around in the class, the walls are in motion.



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