Answer: Zero.
- A Zero
- B Equal to average speed
- C Negative
- D Infinite
Correct answer: A. Zero
Explanation: Average velocity is displacement divided by time. Zero displacement gives zero average velocity, even though average speed (distance/time) can be non-zero.
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.