Speed Examples in Physics
Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Speed.
This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Physics.
Concept Recap
The rate at which an object covers distance over time, calculated as total distance divided by total time, always expressed as a non-negative scalar quantity without direction.
How fast you're going, ignoring which way—just the magnitude of motion.
Read the full concept explanation →How to Use These Examples
- Read the first worked example with the solution open so the structure is clear.
- Try the practice problems before revealing each solution.
- Use the related concepts and background knowledge badges if you feel stuck.
What to Focus On
Core idea: Speed is a scalar—just a positive number with no direction attached.
Common stuck point: Speed is always positive or zero; velocity can be negative (indicating direction).
Sense of Study hint: When solving a speed problem, first identify the total distance traveled (not displacement) and the total time taken. Then divide distance by time: speed = d/t. Finally, remember that speed is always positive — if you get a negative value, check whether you accidentally used displacement instead of distance.
Worked Examples
Example 1
easySolution
- 1 Convert units: 5 \text{ km} = 5000 \text{ m} and 25 \text{ min} = 1500 \text{ s}.
- 2 Use the average speed formula: s = \frac{d}{t}.
- 3 Average speed: s = \frac{5000}{1500} \approx 3.33 \text{ m/s}
Answer
Example 2
mediumPractice Problems
Try these problems on your own first, then open the solution to compare your method.
Example 1
easyExample 2
mediumRelated Concepts
Background Knowledge
These ideas may be useful before you work through the harder examples.