Velocity is speed with direction.
To show the difference, show the direction of an object compared with speed alone.
For example, a speedometer shows speed alone, a car on a road can show speed and direction.
speed is scalar while velocity is a vector. In other words, velocity is to do with direction also. Speed does not show direction.
It shows instantaneous speed.
Some channels show you the distance between the ball and the goal at freekicks. They also show the speed of the shot. On average a freekick is between 80 and 100km\h.
Just the speed of the car.
The speed of the car. The speed-o-meter only shows a magnitude ( or a number ) and to tell the velocity of a car it would have to give that speed some direction. Since the speedometer assigns no direction to the car, the number assigned as the speed of the car cannot be the velocity of the car.
speed is scalar while velocity is a vector. In other words, velocity is to do with direction also. Speed does not show direction.
It shows instantaneous speed.
Some channels show you the distance between the ball and the goal at freekicks. They also show the speed of the shot. On average a freekick is between 80 and 100km\h.
constant speed means no acceleration and thus no change in velocity
Just the speed of the car.
Direction and speed which is also velocity.
This is a really good question. Speed and velocity are similar. Velocity is just speed, but a direction is included. Say you are driving a car. Driving forward is positive velocity, while driving backwards is negative velocity. Speed is what a radar gun would show about the car either way, because it can't tell if the car is moving forward or backward. Therefore, you can have negative velocity, but there is no such thing as negative speed. A speed graph will always stay positive, while a velocity graph can go negative at some places, though it doesn't have to. HOPE THIS HELPS!!! Addendum: Only in ONE-dimensional motion can "Velocity vs Time" graphs be truly drawn; as only in this dimension can direction be indicated by +/- sign. In 2-D and 3-D motion, the graph equivalent must be "Speed vs Time" because these graphs do not indicate direction.
exoctics are made for speed and tuners are made for show and are easer to handel
as a horizontal straight line
The speed of the car. The speed-o-meter only shows a magnitude ( or a number ) and to tell the velocity of a car it would have to give that speed some direction. Since the speedometer assigns no direction to the car, the number assigned as the speed of the car cannot be the velocity of the car.
What do you mean, an African or a European Swallow
The question is poorly put. Perhaps your underlying concern is best addressed by explaining what 'speed' really means. 'Speed', by definition, is the absolute value of the velocity vector. The velocity is in turn the derivative of the vector (function) describing the object's position as a function of time. This is why we can have a constant speed even when the velocity is always changing, as happens with circular motion with the velocity always directed towards the center of the circle. So if the speed is non-zero, then there must be some motion. Is that what you mean by "show motion"?