The size of the velocity is the speed, and you calculate it the same way. But when
you find the size of the velocity, you're not done yet, because you also need its
direction.
direction
No, velocity refers to the speed of an object in a specific direction. In the context of waves, velocity is the speed at which a wave moves through a medium in a particular direction. So, in the case of waves, velocity and speed refer to the same concept.
Velocity is a vector quantity that includes both speed and direction, while speed is a scalar quantity that only measures how fast an object is moving. The key distinction between velocity and speed is that velocity includes direction, while speed does not.
Speed and velocity cannot be compared because they are different things. It is like saying "apples > oranges". Velocity is a vector and, as such, it has a direction and a size. The size of the vector velocity is it's speed.To answer your question: no because they can't be compared. And if you wanted to ask if the size of the velocity vector being smaller than the speed... no... that is the definition of speed... so it cannot be different, regardless of the number of dimensions you are using.
Velocity, which is different than speed in that it has a directional component to it.
Velocity, which is different than speed in that it has a directional component to it.
Velocity, which is different than speed in that it has a directional component to it.
Velocity, which is different than speed in that it has a directional component to it.
If the final velocity is less than the initial velocity, the object is decreasing speed. The object has slowed down or its speed has decreased compared to when it started.
When acceleration is less than 0 and velocity is less than 0, the speed is positive. Speed is the absolute value of velocity, so it is always positive regardless of the direction of motion.
When the direction of motion is relevant, you would use velocity rather than speed.
The velocity of an object cannot ever be greater than its speed as the two are directly linked. Velocity is very similar to speed except that it also takes direction into consideration.