Speed is just the magnitude of the velocity.

And I use this word velocity when I specify a speed and a direction.

So the speed is equal to the angular velocity times r

So, here's speed and velocity, but let's just do one thing at a time.

So, the speed is really just the magnitude of the velocity vector.

Its velocity will not change, neither its speed nor its direction, will change.

Speed is the magnitude of velocity. It doesn't take into account the direction.

The required speed is called orbital velocity, and it varies with the height of the orbit.

Speed being a scalar quantity only having a magnitude and velocity being a vector quantity having speed with a direction having a magnitude and a direction.

Even though it's called the angular velocity it tends to be treated as angular speed

Even though its speed might be constant, or the magnitude of its velocity might be constant we know that the direction of its velocity is constantly changing

Assuming that we start with... so my initial velocity, or I could say the magnitude of my initial velocity so just my initial speed, you could say, this is just a fancy way of saying my initial speed... ...is zero

And I think It will become a little bit clearer the difference between speed and velocity and why these things are accelerating.

So no matter what your upward velocity, the time in the air is going to be your speed, your vertical speed, divided by the acceleration of gravity.

Muzzle velocity is the speed a projectile has at the moment it leaves the muzzle of the gun.

The phase velocity is the speed at which the crests of the wave move and can be faster than the speed of light in vacuum, and thereby give a refractive index below 1.

Now, we also know the angular velocity, or the magnitude of the angular velocity, is equal to the magnitude of our velocity, or the speed of our object, divided by the radius of the circle that it is going around.

Unbalanced force on a body will always impact its velocity, it could be its speed, its direction, or both.

Because velocity and speed are related to energy, Equation () can be used to derive relationships between temperature and the speeds of gas particles.

The average velocity is just the average of the initial velocity and the final velocity.

So we have, if we just do the scalar version we're not dealing with velocity and displacement, we're dealing with rate or speed and distance.

The magnitude of the centripetal acceleration is equal to your speed, the magnitude of your velocity, squared, divided by your radius.

An unbalanced force on a body will always impact the object's velocity. That would be true but we wrote speed here.

But I wanted to point this out to you because in an example like this, the difference between speed and velocity starts to matter.

So she throws it exactly straight forward with a speed or since we're going to give the direction as well, it's a velocity, right, cause speed is just a magnitude while a velocity is a magnitude and a direction so she throws the ball at 35 meters per second, and this ball is 0.15 kilograms.

That's our average velocity, velocity average.

If you wanted to figure out its average speed the velocity is constantly changing because the direction is changing but the magnitude of the velocity if we wanted to figure out the average magnitude of the velocity or the average speed the total distance traveled is 12 pi meters divided by the time required to travel the 12 pi meters so that is 2 and 14 30 seconds

Well the velocity is just, what's velocity?

When the girl at rest, velocity equals zero miles per hour, begins accelerating to reach the speed within seconds, velocity increases rapidly to 25,000 miles per hour, her brain would crash into the side of her skull.

The average velocity is just the initial velocity plus the final velocity over 2.

Velocity

Velocity!

We know also that velocity, or let's say the change in velocity, is equal to the final velocity minus the initial velocity.

And just like that, we have the magnitude of the velocity or we could say the speed of the object as it goes around in a circle

let's think about if we can figure out what the minimum what the minimum velocity or i should say the magnitude of the velocity or the speed had to be to actually complete the loop right over here and then we can actually get a stopwatch later on to see what his actall velocity was

And let me plot its velocity against time so this is my velocity

And the average velocity...if your acceleration is constant... if and only if your acceleration is constant then your average velocity will be the average of your final velocity and your initial velocity and so in this situation, what is our average velocity? well our average velocity, let's do it in m s is going to be our final velocity, which is (let me calculate it down here) so our average velocity in this example

It's not the velocity. It's the magnitude of velocity

It's called angular velocity because if you think about it this is telling us how fast is our angle changing, or speed of angle changing

The length of this part of the triangle is going to be our horizontal speed, or the component of this velocity in the horizontal direction.

The magnitude of our velocity or speed is equal to the square root of our acceleration times or the magnitude for acceleration times the radius

So, lets figure out the final velocity, the vertical and horizontal components of that final velocity, and then we can reconstruct the total final velocity.

We know the average velocity is equal to the final velocity plus the initial velocity over 2, and this assumes acceleration is constant.

I'll use distance and velocity.

And this is the velocity.