Speed vs Average Speed — Difference (with Table & FAQs)
Speed is the distance traveled per unit time at a specific instant, while average speed is the total distance traveled divided by the total time taken. Ave
TL;DR: Speed is the distance traveled per unit time at a specific instant, while average speed is the total distance traveled divided by the total time taken…
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
The main difference between Speed and Average Speed: Speed is the distance traveled per unit time at a specific instant, while average speed is the total distance traveled divided by the total time taken. Ave
Speed vs Average Speed — Comparison Table
| Basis | Speed | Average Speed |
|---|---|---|
| Definition | Distance per unit time at an instant | Total distance divided by total time |
| Calculation | Speed = distance/time for small intervals | Average speed = total distance/total time |
| Time Interval | Instantaneous value at a moment | Over the entire journey |
| Variation | Can change at each instant | Single value for entire trip |
| Speedometer | Shows speed at each moment | Cannot show average speed directly |
| Example | Car speedometer reads 60 km/h | Car traveled 120 km in 2 hours at average 60 km/h |
Key Points
- Speed is an instantaneous quantity while average speed is a derived quantity over a time interval
- A vehicle can have varying speed but constant average speed for a trip
- Average speed does not provide information about the actual path taken
- For uniform motion, speed and average speed are equal
Frequently Asked Questions
What is the difference between speed and average speed?
Speed is how fast an object is moving at a particular moment or over a stretch. Average speed is the total distance travelled divided by the total time taken for the whole journey.
How do you calculate average speed?
Average speed = total distance ÷ total time. It takes into account stops and changes of speed during the journey.
Can average speed differ from the actual speed?
Yes. If the speed changes during a trip, the average speed can be different from the speed at any single instant.