Answer: metre per second².
- A metre per second²
- B metre per second only
- C just the metre
- D just the second
Correct answer: A. metre per second²
Explanation: Acceleration is change of velocity per time, so its unit is m/s².
On a velocity-time graph for uniform acceleration, the slope of the line gives the acceleration and the shaded area under the line gives the displacement.
Concept context
Equations of motion, projectile motion, relative velocity. Foundation of all mechanics.