Speed, velocity, and acceleration are important ideas to help us understand how things move.

Speed is just how fast something is moving. For example, imagine a car going 60 km/h. That tells us the car's speed.

Velocity is a bit different. It includes both speed and direction. So, if we have a train moving north at 80 km/h, we are talking about its velocity because we know where it's going.

Acceleration is about how quickly something speeds up or slows down. For instance, if a bicycle speeds up from 10 meters per second to 15 meters per second in 2 seconds, we can find its acceleration.

We can use a simple formula for this:

$a = \frac{\Delta v}{\Delta t}$

Here, $\Delta v$ means the change in speed. In this example, the bicycle's acceleration would be $2.5 \, m/s^2$.

Knowing the difference between speed, velocity, and acceleration helps us understand what’s happening around us every day!