观察一个线性运动的位置-时间图，我们可以解释运动的物体是向前还是向后 (或向右还是向左，这取决于我们如何定义运动!) 点击这里观看更多视频: https://alugha.com/KhanAcademy 观看更多视频或练习本知识点: https://www.khanacademy.org/math/ap-calculus-ab/ab-diff-contextual-applications-new/ab-4-2/v/interpreting-direction-from-position-time?utm_source=youtube&utm_medium=desc&utm_campaign=apcalculusab 可汗学院是一个非盈利组织，其使命是为所有人、所有地区提供免费的、世界级的教育。我们这里有小测试，疑难问题，教学视频和一系列的学术主题的文章，涵盖数学，生物，化学，物理，历史，经济，金融，语法，学前学习等。我们为教师提供工具和数据，方便他们帮助学生培养技能、习惯并端正心态，从而能在学校内外取得成功。可汗学院已经被翻译成几十种语言，全球每月有1500万人在可汗学院学习。作为一个501(c)(3)非营利组织，我们非常感谢您的帮助! 今天就捐款或做志愿者吧! 捐赠: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc 自愿者: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
LicenseCreative Commons Attribution-NonCommercial-ShareAlike
Click here to see more videos: https://alugha.com/KhanAcademy Learn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://bit.ly/2W8suMC Watch the next lesson: https://bit.ly/38MOXS8 Missed the previous lesson? https://bit.ly/33qMOuB Early Ma
In this video, learn about how several scenarios affect the aggregate production function and economic growth. Click here to see more videos: https://alugha.com/KhanAcademy Practice this yourself on Khan Academy right now: https://bit.ly/38zZHDr AP(R) Macroeconomics on Khan Academy: Macroeconomic
Working example comparing constants of proportionality. Click here to see more videos: https://alugha.com/KhanAcademy View more lessons or practice this subject at: https://bit.ly/2HlJaYv Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyo
