Acceleration and velocity are like best friends in physics! They are both important for understanding motion, but they have different jobs.

1. What They Mean:

• Velocity is about how fast something is moving and in which direction. It’s a mix of speed and direction.
• Acceleration tells us how the velocity changes over time. It shows us how quickly something speeds up, slows down, or changes direction.

2. How They Work Together:

• When velocity goes up, it means acceleration is positive.
  For example, if you're driving faster on the highway, you're experiencing acceleration.
• If you’re slowing down, like when you hit the brakes, that’s negative acceleration, which is also called deceleration.

3. How to Calculate Acceleration:

• You can figure out acceleration with this simple formula:
  a = (change in velocity) / (change in time).
  Here, "change in velocity" shows how much the speed has changed and "change in time" shows how fast that change happened.

So, to sum it up:
Velocity tells us how fast and where we’re going,
while acceleration shows us how that speed is changing.

Together, they make a great team in understanding motion!