① the time rate of change of displacement. Is a vector, the direction and displacement in the same direction. Describe the particle motion direction and speed of the position change. Sub-average speed, instantaneous speed. Speed is derived quantity, the unit by the length of the combination of units and time units. Common units m / s, km / hours and so on. ② the extent that he write speed is fast.
Translated by Google
sù dù
: Moving Objects in a direction per unit time the distance through which
Translated by Google
No. 3
The rapidity of movement
Translated by Google
No. 4
Bullet speed
Translated by Google
No. 5
Happened or the role of speed
Translated by Google
No. 6
Rate of bacterial growth
Translated by Google
No. 7
That the movement of objects in a certain direction within the unit time through the distance. Bi Ye, "Snow Road cloud Cheng Chi Wang balgantai": "car suddenly reduce speed, sounded the horn." Yang Shuo "Yesterday's Linfen": "But Fenglingdu to Linfen, the train's speed and better than many carts fast. "Ai Qing" Light Praise ":" Let us fly to the highest speed, and let us fly with dauntless spirit it! "
Translated by Google
No. 8
Refers to the degree of speed. Ai Wu, "AISC, ah, I'm back": "I saw a large steel plant in the third oxygen top-blown converter, 30 minutes, the mixing out of a furnace steel, far more than the speed of open-hearth steel."
Translated by Google
No. 9
English velocity Indicates the direction of movement of the object and the speed of the physical movement in uniform motion, the velocity is numerically equal to the unit of time passed away. Also known as the rate of change of displacement. Defined as: the unit of time, the amount of displacement of the moving object changes. Size of objects in unit time through the journey. Or is defined as: the occurrence of the shift used in physics displacement indicated by the physical movement of the speed ratio of the time Velocity is a vector, the size, but also the direction. The magnitude of the velocity in the direction of the value per unit time is equal to the size of the displacement of an object, the speed of movement of the object is the direction. The speed of the unit is a unit of length and time of synthesis units units in the International System of Units is: m / s (m / s) There often cm / sec (cm / s) km / h (km / h) step, one hour miles (miles an hour) The formula: v = Δx / Δt v represents the velocity Δx represented by the displacement Δt represents the time spent by this shift. "Speed" is a term describing the orientation and position of the object movement speed of the physical changes, the speed only shows the state of motion of the object rather than the other. Movement speed reaction speed, "speed" of the word has also been extended to the development of the language, said the speed of change in the transaction.
Translated by Google
Physical
Definition: Definition of junior high school: from objects in unit time by how much, is called speed. Definition of high school: displacement and displacement rate equal to the ratio of time spent. Symbol: v [Note: Greek υ represents another physical "displacement"] Definition equation: v = s / t basic unit in the International System of Units: m / s (m / s) Physical meaning: Speed is the speed of the physical description of the movement of objects. Nature: Vector Max: vacuum speed of light c = 299 792 458m / s Related terms: Rate: the rate of magnitude of the velocity is referred to, often called speed. Instantaneous speed: the speed of moving objects at a time (or a position), called the instantaneous speed. Average speed: displacement and the objects used by the ratio of the time, called the average speed. (Whether to make any kind of exercise) Additional information: 1, the speed is a relative physical quantity, i.e. the size of an object relative to another object (reference) time-varying displacement of the unit. 2, physically as well as average speed: displacement of an object through a period of time and the ratio of the average speed of the displacement of an object, usually we say more instantaneous speed. 3, usually when we describe how fast or how many units of time to do some action will be used to speed. For example: typing speed, translation speed. 4. Velocity is a vector, or whether the average speed instantaneous velocity are vectors. The only criterion to distinguish between speed and velocity is the speed of the size but also the direction, speed is not the direction the size. [Note: This misunderstanding caused by a lot of people misunderstand rate = rate, which is not correct, the relationship between speed and rate look right. 】
Translated by Google
Other meanings
Speed in everyday life, mostly for young people to use, meaning hurry. Can usually be seen in the online game. Similar language as well: KKKKKK ...... Chinese-English interpretation: speed rate velocity
Translated by Google
Encyclopedia
sudu Speed tempo Refers to the relative speed of the extent of the music performed during the beat. This term is derived from the Latin "tempus". Speed standard language at the top stave of a song or general music begins. Currently international common language is Italian speed (also useful for the national language), established at the beginning of the 17th century. Early 19th century, after the advent of the metronome, composers often next term rate plus the metronome markings to indicate the exact speed as he may require, such as: MM □ = 144. The first one is a film festival is a manufacturer M. Mayer Zell (Mael-zel) initials, M. to shoot the first two sections is (metronome) initials, □ = 144, ie 144 per minute played quarter note. See Appendix at various speeds term commonly used music notation symbols. Speed terminology or beat markers, is to be based on the performance of the composer's content requirements, but also the main basis performer performing music. In order to apply to the performance of music content, performers can work according to their own understanding of the speed and beat for some individual treatment. This subtle change in speed is called the priority of law, this term by H. Freeman in 1884, the first application. Some names may be used as the speed of the genre terminology, such as speed minuet, waltz speed. Some composers have the speed terminology as song title, such as andante, adagio, etc. (Wang Qizhang)