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Sign Convention in kinematics

Please tell me the sign convension for   velocity & accleration for a body  moving upwards ,downwards, right   and left relative to another body? (Apoorv Katoch asked)

Answer: In motion, sign conventions are arbitrary. You take one direction as positive and the direction opposite to it as negative.

For example, if you consider a body projected vertically upwards, and if you take the initial velocity as positive, then all measurements taken in the upward direction will be taken positive and all measurements taken in the downward direction is taken negative.

You can ask further doubts related to this as comment to this post.


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