most people use speed and velocity interchangeably. but to physicists, the two have very specific, and different, meanings. to complicate matters further, not all physics textbooks agree on the definition of speed. what’s the average speed and velocity for a car going around a race track?
speed就是指速度,是一个比较非正式的口语化单词velocity是一个专业词汇,一般学过物理的都知道v表示速度,这里的v就是velocity的缩写,v是一个矢量,当然是同时表示方向和速率,可以总结为velocity = speed + direction... 分析总结。 speed就是指速度是一个比较非正式的口语化单词velocity是一个专业词汇一般学过物理...
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
1. What is the difference between speed and velocity? 相关知识点: 试题来源: 解析 Speed is a scalar (has a size)and velocity is a vector (has both a size and a direction).Furthermore,speed is distance /time and velocity is displacement /time. ...
The rate at which velocity changes is called Why do we use velocity instead of speed in physics? What is the definition of average velocity? What is the difference between distance traveled and displacement? What is instantaneous acceleration?
Define wave speed. wave speed synonyms, wave speed pronunciation, wave speed translation, English dictionary definition of wave speed. or n other names for phase speed Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCo
velocity是速度，包括速率。没有方向，标量speed也是速度，但有超速，迅速，加速，推进的意思。是有方向的。矢量
Velocity is speed with a direction. There you have it - a simple way to understand the difference between speed and velocity. You could argue that the two terms are interchangeable and, for most of us, they are. But, if you want to be precise, remember thatin order to achieve velocity...
【题目】Find the velocity, acceleration, and speed of a particle withposition vector r(t)=(t^2,e^t,te^t) A moving particle starts at an initial position r(0)=(1,0,0) with initial velocity v(0)=i-j+k . Its acceleration is a(t)=4ti+6tj+k . Find its velocity and position ...
Find the velocity, acceleration, and speed of a particle with position vector ( r)(t)=(t^2,e^t,te^t)A moving particle starts at an initial position ( r)(0)=(1,0,0) with initial velocity ( v)(0)=( i)-( j)+( k). Its acceleration is ( a)(t)=4t( i)+6t( j)+( k...