alleryStart learning →What is the SI unit of acceleration?
AMetres per second cubed
BMetres per second squared
CSquare metres per second
DSeconds per square metre
Answer & Solution
Correct answer: B. Metres per second squared
1. Acceleration is a velocity in m/s divided by a time in s.
2. Dividing m/s by s gives m/s^2, metres per second squared.
3. That unit literally means by how many metres per second the velocity changes every second.
4. The unit m/s alone belongs to velocity, one derivative lower.
_Source: OpenStax College Physics (CC BY 4.0), Ch 2 "Kinematics", section 2.4 Acceleration_
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