without a reference you cannot tell that a body is in motion.when you are in a car u know that u are in motion with reference to that other object like trees are stationary.
a reference point is a non moving object that you compare to another object to see if its moving. Motion is an object that is moving, being pushed or pulled causing itto move
Motion is the change in position of an object over time, while a reference point is an object or location used as a basis for comparing positions. Knowing both concepts is crucial to understanding how movement is described in physics. Without a reference point, determining whether something is in motion can be challenging.
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