alleryWhich quantities need a sign convention fixed before they are assigned values?
ADuration and viscosity
BDistance and vicinity
CDensity and volume
DDisplacement and velocity
Answer & Solution
Correct answer: D. Displacement and velocity
1. In one dimension, direction is carried by a plus or minus.
2. Three named quantities all take signs.
3. Signs are assigned to quantities like displacement, velocity and acceleration once the choice is specified.
4. So the answer is displacement and velocity.
_Source: syllabus Physics Part I, Ch 2 'Motion in a Straight Line'_
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