Question

what is a sign convention ?
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Answer 1

Answer:

In physics, a sign convention is a choice of the physical significance of signs (plus or minus) for a set of quantities, in a case where the choice of sign is arbitrary.

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Answer 2

Answer:

In physics, a sign convention is a choice of the physical significance of signs (plus or minus) for a set of quantities, in a case where the choice of sign is arbitrary. ... In general, a sign convention is a special case of a choice of coordinate system for the case of one dimension.

Explanation: