alleryWhich of the following is a scalar quantity?
ASpeed
BVelocity
CDisplacement
DAcceleration
Answer & Solution
Correct answer: A. Speed
1. A scalar quantity has only magnitude with no direction.
2. Speed is the rate of change of distance, given as a single positive number.
3. Velocity, displacement and acceleration each carry a direction along with their magnitudes.
4. So speed is the scalar quantity in the list.
_Source: Selina Concise Physics ICSE Class 9, Ch 2 'Motion in One Dimension' (aplustopper.com extract)_
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