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Speed and velocity are the same in magnitude; but speed is a scalar and velocity a vector; a vector has magnitude and direction. For example if an object is moving with a speed of 100 mph in a certain direction its velocity is 100 mph in that direction. If it changes direction ate same speed and you want to compute distance traveled, etc., you would need to use vector addition. We sometimes use speed and velocity interchangeably which is fine for talking purposes.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoIn popular speak, "speed" and "velocity" means the same thing.In physics, the terms are used with different meanings. "Speed" does not consider the direction (in other words, it's a scalar); "velocity" includes both a magnitude and a direction (so it is a vector). In many physical problems, the additional information, i.e., in what direction an object is moving, is required.
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Why we does not use speed instead of velocity?
When the direction of motion is relevant, you would use velocity rather than speed.
When do people use velocity instead of speed?
i forgot
Why there's a change velocity if you are changing direction?
Because that's the definition of 'velocity'.'Velocity' is not just a word you use instead of 'speed' when you want to sound smart.It's meaning is different from the meaning of 'speed'.'Velocity' has two parts to it . . . speed and direction. If either of those changes, thenthe velocity has changed.
Why do you need to calculate velocity instead of speed?
Speed and Velocity are two different things . Velocity- "the rate at which an object changes its position." Speed- "How fast an object is moving". To calculate speed and velocity, you first need to calculate distance and time. Velocity is considered to be a more logical term
Why is velocity and speed same unit?
Velocity is speed, plus an indication of direction. To indicate a velocity, you can indicate a speed (this will logically use units of speed), and a direction.
How can you use integers to reprsent the speed and velocity of an object?
You can sometime use integers but often speed or velocity can also be irrational.
Speed is to scalar quantity whereas velocity is to?
... a vector quantity. Speed is a scalar, meaning only the magnitude (a number) is used. If the direction of a movement is of interest, you use the word "velocity", instead, to describe the vector. A vector has both a magnitude and a direction.
Why would it be more important to know the velocity of the hurricane instead the speed of hurricane?
The velocity tells you the speed of the hurricane, but also tells you the direction the hurricane is heading.
Use terminal velocity in a sentence?
termial velocity has speed direction an acceleration
Why do you used v instead of the s for speed formula?
S is usually used for position and v for velocity or speed.
Acceleration is a change in speed or?
Acceleration is the change in an ogjects speed or a change in an objects direction of motion or both of these. If instead of speed you use the word velocity , which is both an object's speed and its direction of motion, then you could say "acceleration is the change in an objects velocity" and that would cover all the possibilities in one statement.
A wave with a frequency of 18 hz has a wavelength of 4 meters what is the velocity of the wave?
speed = wavelength x frequency therefore, you would solve this by multiplying 18 and 4 to find the speed. There isn't enough information to find the velocity. In fact, it's doubtful whether it's even appropriate to talk about the 'velocity' of a wave. 'Velocity' is not simply a word you use instead of 'speed' in order to sound smart.
