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13:58 Jan 28, 2017 |
English to Dutch translations [PRO] Education / Pedagogy / schoolexperimenten | |||||||
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| Selected response from: Barend van Zadelhoff Netherlands Local time: 07:48 | ||||||
Grading comment
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Summary of answers provided | ||||
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3 +2 | vectoriële snelheid |
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4 | vaart of snelheid |
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Summary of reference entries provided | |||
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Snelheid: scalair (speed) vs vector/vectorieel (velocity) |
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Discussion entries: 11 | |
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vectoriële snelheid Explanation: Vectoriële snelheid is anders dan snelheid, in die zin dat het niet alleen iets zegt over de grootte van de snelheid, maar ook over de verplaatsing en de richting waarin een object zich beweegt. Je kunt de gemiddelde vectoriële snelheid berekenen door te bepalen wat de verplaatsing is en de tijdsduur van de beweging. http://nl.wikihow.com/Gemiddelde-vectoriële-snelheid-bereken... Vectoriële snelheid (velocity in het Engels) wordt gedefinieerd als de snelheid van een object in een bepaalde richting.[1] http://nl.wikihow.com/Momentane-snelheid-berekenen -------------------------------------------------- Note added at 33 mins (2017-01-28 14:31:59 GMT) -------------------------------------------------- Velocity is a vector quantity that refers to "the rate at which an object changes its position." Imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. While this might result in a frenzy of activity, it would result in a zero velocity. Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity. If a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. Every step must go into moving that person further from where he or she started. For certain, the person should never change directions and begin to return to the starting position. Velocity is a vector quantity. As such, velocity is direction aware. When evaluating the velocity of an object, one must keep track of direction. It would not be enough to say that an object has a velocity of 55 mi/hr. One must include direction information in order to fully describe the velocity of the object. For instance, you must describe an object's velocity as being 55 mi/hr, east. This is one of the essential differences between speed and velocity. Speed is a scalar quantity and does not keep track of direction; velocity is a vector quantity and is direction aware. http://www.physicsclassroom.com/class/1DKin/Lesson-1/Speed-a... -------------------------------------------------- Note added at 56 mins (2017-01-28 14:55:54 GMT) -------------------------------------------------- Snelheid is de verplaatsing van een object gedurende een bepaalde tijd . De standaardmethode voor het bepalen van de snelheid van een object is door het delen van de verandering in de afgelegde afstand door de verandering in de tijd, maar er zijn ook nog andere methoden die je kunt gebruiken om de snelheid en de vectoriële snelheid (En. velocity; hierbij houd je rekening met de richting van de verplaatsing) te berekenen. Hier vind je een aantal die je zou moeten kennen. http://nl.wikihow.com/De-snelheid-van-een-object-berekenen -------------------------------------------------- Note added at 1 hr (2017-01-28 15:08:42 GMT) -------------------------------------------------- The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion (e.g. 60 km/h to the north). Velocity is an important concept in kinematics, the branch of classical mechanics that describes the motion of bodies. Velocity is a physical vector quantity; https://en.wikipedia.org/wiki/Velocity |
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Grading comment
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16 mins confidence:
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2 hrs peer agreement (net): +1 |
Reference: Snelheid: scalair (speed) vs vector/vectorieel (velocity) Reference information: Speed is scalar. Scalars are quantities with only magnitude. The direction does not matter. If you are on the highway whether traveling 100 km/h south or 100 km/h north, your speed is still 100 km/h. (...) Velocity is a vector. Both direction and quantity must be stated. It one train has a velocity of 100km/h north, and a second train has a velocity of 100km/h south, the two trains have different velocities, even though their speed is the same. http://www.physics247.com/physics-homework-help/speed-veloci... Vectoriële snelheid is anders dan snelheid omdat vectoriële snelheid een vector is en snelheid een scalair. Vectoren hebben een grootte en richting en scalairen alleen maar een grootte. http://nl.wikihow.com/Gemiddelde-vectoriële-snelheid-bereken... |
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