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Q: When is speed equal to magnitude of velocity?

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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.

Always

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

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

the velocity vector

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

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.

speed (magnitude of velocity)

Magnitude of velocity is called 'speed'.

Velocity has magnitude and direction and speed only has magnitude.

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

speed has magnitude. velocity has magnitude and direction.

Because speed is the magnitude of the velocity vector. The velocity consists of the speed and the direction, and the whole thing can be embodied in a 3D vector. If you like the velocity is the magnitude (the speed), which is a scalar (just a real number), multiplied by a unit vector in the right direction.

velocity is a vector and speed is scalar. Velocity has magnitude and directions, with magnitude being speed. The magnitude of average velocity and average speed is the same.

Speed and velocity always have the same magnitude, becausespeed is the magnitude of velocity.The difference is that velocity has a direction but speed doesn't

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

Velocity is a vector, and so it has two components -- magnitude (speed) and direction. Speed is a scalar, and it is the magnitude of velocity, a vector.

Then you can say that the object's speed and the magnitude of its velocity are constant, and the magnitude of its acceleration is zero.

The speed is the MAGNITUDE of the velocity, i.e., without regard to the direction.

Yes, velocity has magnitude and direction. Speed, on the other hand, only has magnitude.

Speed is the magnitude of velocity (which has a direction as well).

Speed is magnitude of velocity, also velocity possess direction.

Speed is a scalar (Only has magnitude, no direction) Velocity is a vector (Has magnitude and direction)