Math and Arithmetic

# Why is the value of velocity equal to speed?

###### Wiki User

This is because speed is defined as the absolute value of velocity - irrespective of the direction of motion.

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## Related Questions

Velocity is a vector. The magnitude of the velocity - its absolute value - is its speed.

For the instantaneous value of average velocity, average speed and average velocity are equal.

It's not. Unless you add a direction to speed it will not become velocity. Since positive and negative are sometimes used to denote direction, absolute value of velocity may equal speed (certain situations)

Velocity is a vector, which means it has a direction, but speed isn't. Speed is the absolute value of velocity. Velocity can be negative, meaning that the speed is opposite to the direction that you're calling the positive direction.

mph or 'miles per hour' is a unit and can equal any value of speed or velocity.

The magnitude of the velocity is always equal to the speed. But velocity is a vector quantity (has a magnitude and direction) while speed is just a scalar quantity (only magnitude). So velocity and speed are never equal.

YES!!!!!!!!!!!! A body can have equal velocity and speed at the same time. for suppose a body is travelling at 20m/s in north direction then the speed of the body is also equal to 20m/s. hence speed and velocity are equal in this case.

That is the case when you are talking about instantaneous speed and velocity - or when the velocity is constant. In the case of an average speed and velocity, this relation does not hold.

No, you've got it backwards. The absolute value of velocity equals speed. Velocity is speed with a direction; speed is just a number, without regard to direction.

Yes. Speed is a scalar, while velocity is a vector.

speed and velocity becomes equal when a body is moving on a straight road without changing its direction.

Speed is the size of velocity. But velocity also has a direction. "30 miles per hour" is speed. "30 miles per hour north" is velocity.

Speed is the size of velocity. But velocity also has a direction. "30 miles per hour" is speed. "30 miles per hour north" is velocity.

The magnitude of average velocity of an object equal to its average speed if that object is moving with CONSTANT velocity.

It's a scrambled equation. What you meant to say is, "The absolute value of velocity equals speed."

Velocity is equal to the change in distance divided by the change in time. Speed is the magnitude of velocity

No. Speed is the magnitude of the velocity vector. In order for two velocities to be equal, they must have equal magnitudes and equal (parallel) directions.

The magnitude(the value). Speed is only magnitude Velocity is magnitude &amp; direction

Velocity is a vector and its magnitude depends on the direction. If it is positive in one direction, going in the opposite direction it is negative. But speed is a scalar and does not depend on the direction. It has the same value, whatever the direction. That is how the absolute value of velocity is speed.

Speed is equal to the magnitude of velocity almost always. Speed is total distance / total time no matter which way the distance goes. Velocity is the distance from a starting point divided by total time.

Because velocity has a direction but speed does not. A vector has both a numerical value and a direction but a speed has only a numerical value and therefore it can't be represented by a vector.

-- The magnitude of acceleration is equal to the time rate of change of speed. -- The magnitude of acceleration is equal to the time rate of change of the magnitude of velocity. -- Acceleration and velocity are both vectors.

The initial speed of a given particle.

Speed is what is called a scalar value meaning it has just a magnitude (a number) and velocity is a vector value meaning it has magnitude and direction.

The speed and direction of an object combine to give its velocity with the speed being equal to the magnitude of the velocity.

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