英语中的speed和velocity,哪个是速度哪个是速率?今天翻看英文的物理课本,发现一个问题,书里提到speed is a scalar quantity(标量),velocity is a vector quantity(矢量),但speed是速度,velocity是速率,这和高中物理书上所说的速度属于矢量,速率属于标量不是相反吗?望高人指点....
1. What is the best description of the difference between speed and velocity? Velocity is used in race car driving, while speed is used in physics Velocity is a quantity that requires distance over time along with direction while speed is a quantity that requires distance over time only Velo...
In the field of physics, velocity is a vector quantity, meaning it has both magnitude and direction. This distinction is important because it allows scientists to accurately describe the motion of objects in three-dimensional space. By specifying both the speed and the direction of an object's ...
Define velocity. velocity synonyms, velocity pronunciation, velocity translation, English dictionary definition of velocity. n. pl. ve·loc·i·ties 1. Rapidity or speed of motion; swiftness. 2. Physics A vector quantity whose magnitude is a body's speed
Velocity is the time rate of change of an object's position and describes how quickly an object moves in a given direction. Velocity is a vector quantity, which means that it includes both a magnitude and a direction. The direction of velocity, like all vector quantities, is based on a ...
Explain why velocity is a vector quantity. How to calculate velocity? Explain why motion in a circle involves constant speed but changing velocity. Distance and Displacement, Speed and Velocity Examples: 1. A girl walks 210m in two minutes. Calculate her average speed. ...
Velocity is a vector quantity: it has both magnitude and direction. Speed is the magnitude of the velocity: no direction is associated with speed. 2. (b) 3. (c) 4. 144 ft; 96 ft/s downward; zero 5. 4 s; 12 ft 6. 450 m/s2 7. The magnitude of A→+B→ is 32 units and ...
Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is a direction-awar
它两都有速度的意思，但是英文同义词和中文同义词不大一样，英文的同义词指的是两个词都包含一大堆意思，其中有些意思是完全相同的，speed 除了速度名词还有动词的用法，velocity不可以，而且这个词也相当不常用，用起来和speed意思一样 参考资料：<a href="http://zhidao.baidu.com/question/55765903....
(Physics) A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion. Speed Take or be under the influence of an amphetamine drug More kids than ever are speeding, tripping, and getting stoned Velocity The rate at which something acts or occur...