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Speed vs Velocity: Explained for Nigerians in a way you’ll never forget.
Education
19 days ago
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Nathaniel
19 days agoSpeed vs Velocity: Explained for Nigerians in a way you’ll never forget.
Many students confuse speed and velocity.
But today, you’ll understand it so clearly, you’ll never mix them up again.
Let’s break it down 👇
1.What is SPEED?
Speed is how fast something is moving.
It tells us how much distance an object covers in a given time.
✅ Formula:
Speed = Distance / Time
✅ It is a scalar quantity → it has magnitude only, no direction.
2. What is VELOCITY?
Velocity is speed in a specific direction.
It tells us how fast AND where an object is moving.
✅ Formula:
Velocity = Displacement / Time
✅ It is a vector quantity → it has both magnitude and direction.
3. Wait, what’s the difference between Distance and Displacement?
🔹 Distance = total path covered (no direction involved)
🔹 Displacement = shortest straight-line distance between two points, WITH direction
📌 Example:
If you walk 5 km forward, and then 5 km back to where you started:
Distance = 10 km
Displacement = 0 km
Speed = 10 km / time
Velocity = 0 / time = 0
Boom. That’s the trick.
4. Real-Life Example (Nigerian Version):
Let’s say you’re walking from your house to the market, which is 3 km away, and then back home.
Total distance = 3 km (to market) + 3 km (back) = 6 km
But your displacement = 0 (since you returned to where you started)
✅ So:
Speed = 6 km ÷ time taken
Velocity = 0 ÷ time = 0
So yes…
You moved. You used energy. You even sweated.
But your velocity is still zero! 😂
5. Summary (The Easy Way to Remember):
Speed: How fast.
Velocity: How fast + where.
Speed doesn’t care about direction. Velocity does.
Speed = scalar. Velocity = vector.
You can have speed without velocity, but not velocity without speed.
6. Bonus Trick:
🚗 "A car going round in circles has speed, but its velocity keeps changing."
Because the direction keeps changing.
The magnitude (speed) may remain the same…
But since direction ≠ constant → velocity is not constant.
7. Final Takeaway:
Speed is just movement.
Velocity is movement with purpose (direction).
That’s the difference.
Now you can teach your classmates. You’re welcome. 😉