2019kL is the same as__dL?
1 answer:
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Answer:
Velocity
Explanation:
In physics, there are two types of quantity:
- Scalar quantity: these quantities have a magnitude only, so they don't have a direction. Examples of scalar quantities are mass, temperature, time...
- Vector quantity: these quantities have both a magnitude and a direction. Example of vector quantities are velocity, acceleration, force...
An example of vector quantity is velocity. Velocity is defined as
where
is the displacement of an object, which is a vector connecting its initial position to its final position of motion
is the time elapsed
Therefore, velocity has a magnitude and a direction (which is the same as the direction of the displacement). This quantity is used in daily life in many situations, for example when we drive in a car, it is useful to know the velocity at which the car is going.