Here's the breakdown:
* Speed is how fast something is moving, regardless of direction. It's a scalar quantity, meaning it only has magnitude (e.g., 25 miles per hour).
* Velocity is how fast something is moving *and* in what direction. It's a vector quantity, meaning it has both magnitude and direction (e.g., 25 miles per hour north).
So, how does speed increase with velocity?
They are inherently linked because:
* Speed is the magnitude of velocity: If you know the velocity (e.g., 25 miles per hour north), you automatically know the speed (25 miles per hour).
* If velocity changes, speed *can* change:
* Increasing speed: If velocity increases in magnitude (e.g., from 25 mph to 30 mph), speed will also increase.
* Decreasing speed: If velocity decreases in magnitude (e.g., from 25 mph to 20 mph), speed will also decrease.
* Constant speed: If velocity changes only in direction (e.g., from 25 mph north to 25 mph east), speed will remain constant.
In summary: Speed is a part of velocity. Any change in velocity *can* affect speed, but it doesn't always have to.