If you know the velocity you can find the speed, you don't need a sensor.
same speed , coz velocity is constant velocity consists of speed and direction...
A constant speed has no acceleration. When an object is moving at a constant speed, its velocity remains the same over time, and there is no change in acceleration.
Add to it some kind of label to tell the directionof the speed.
Velocity is acceleration and direction put together. The velocity of something changes if either acceleration or direction changes. Speed is just the average MPH measure. Velocity is not acceleration and direction put together. In that kind of description, velocity is is speed and direction put together. Velocity is a vector, whose size is the speed.
You have a velocity when both a speed and a direction is specified. This kind of magnitude is known as a "vector" - that is, when it is relevant to state a direction, as well as a magnitude, we speak about "vectors".
A black hole has an escape velocity of the speed of light, at least theoretically. Oddly, though, each galaxy has a black hole and we can detect them because they throw off massive amounts of energy. If the escape velocity is greater than the speed of light, then no light or energy of any kind should escape. So black holes are not quite the perfect consumers of everything.
For the newest kind of robot, the light sensor is used to detect the white lines from the dark lines on the nxt this helps your robot follow the lines!!
Some vehicles mount a speed sensor on the drive shaft, to see how fast the vehicle is traveling. Not all vehicles use this kind of sensor.
Velocity
"Constant velocity" means neither the speed nor the direction of the object's motion is changing. "Rest" is just one kind of constant velocity ... the kind with zero speed. The condition for an object's velocity to remain constant is: Either there are no forces acting on the object, or else all of the forces acting on it add up to zero. If there is any NET force acting on the object, then its velocity will change ... it will either speed up, slow down, or curve in a new direction.
Objects that do not speed up, slow down, or change it's direction unless they are pulled in some kind of way can change velocity.
speed sensor on top of transmission,if the speed sensor does not work then the shift inside the trans is broken and trans will need to be rebuilt