Questions tagged [speed]

Scalar quantity which is the magnitude of velocity.

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Venturi Effect?

I was rinsing out my recyclables when it seemed to me that a 24 oz. plastic bottle drained A LOT faster than a 12 oz. can when held upside down. So I tried it again and sure enough the 24 oz. bottle drained a lot quicker than the can. If I had to…
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Wind effect on driving a ground-based vehicle

A friend of mine seems to think that wind affects the ground-speed of a ground-based vehicle in the same way airspeed affects an airborne aircraft. i.e. If faced with a 10mph headwind, your car isn't actually traveling at 60mph, it's traveling at…
Paul
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How can speed at a given position be estimated from a bunch of average speed measures at different positions?

I have loose measures of average speed in different positions (speed is in the x axis given particularities of my own problem) How can I estimate a fitting curve for 'instantaneous speed at each position' vs. 'position' ? I guess the first step is…
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Gyro vs Accelero : Why is that assessment false?

Can we say that the Accelerometer's values are somewhat the integral of the Gyroscope's values ? I think that because I know that the velocity is the derivative of the position with respect to time and the acceleration is the derivative of the…
Xaltar
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Spinning Top revolutions calculations

Is it possible to calculate spinning top revolutions per minute? Will the Spinning top material make a difference to the speed revolutions per minute? Example : Wood, Plastic, Steel etc
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White cloud around fighter jet at Supersonic speed

When a fighter jet flies with Supersonic speed then some type of white cloud form around the fighter jet for short period of time.what is the reason behind this phenomena?
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Application of mean of speed distribution

Preface The definition of average speed of an object is defined by the distance travelled over time: $$v_{avg} = \frac{x_2 - x_1}{t_2 - t_1}$$ The interpretation of speed is that when you multiply speed with the time interval, you should get the…
unsym
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Speed formula intuition, dividing distance by time

I have a vague intuition as to why speed is distance / time, but mathematically speaking I don't understand the division aspect of it. One of the first things I learned in arithmetic was that you can't add oranges to apples (not unless you abstract…
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Is it possible to find relative speed?(its speed not velocity)

I was wondering that relative velocity can be computed easily due its directional nature. but what about speed? Speed is not directional so now we cant find relative speed of objects in different directions! Isn't it
Ha'Penny
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What is the maximum speed of a change?

Is there any limit on the speed of changing something? For example a particle is transformed to some other particle; This takes some time or is absolutely instant? If every change takes some time, what is the fastest change? what phenomenon? What is…
H M
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cancelling the speed of a moving object

Hi I can't seem to get this thought out of my head. Is the light from a moving object begin from a zero position. If for a brief instant the object were to stop would that cause the negation of the speed of the moving object to be added to c?