Here's why:
* Velocity is a vector quantity: This means it has both magnitude (speed) and direction.
* Measurement is essential: To determine both the speed and direction of an object's movement, you need to make observations and measurements.
For example:
* Speed: You could measure the distance an object travels over a specific time interval.
* Direction: You could observe the object's path or use a compass to determine its direction relative to a reference point.
Therefore, you cannot know an object's velocity simply by looking at it or guessing. You need to use instruments and methods to measure its movement.
