个人资料图片
English
  • 全部
  • 搜索
  • 图片
  • 视频
  • 地图
  • 资讯
  • 更多
    • 购物
    • 航班
    • 旅游
  • 笔记本
报告不当内容
请选择下列任一选项。
  • 时长
    全部短(小于 5 分钟)中(5-20 分钟)长(大于 20 分钟)
  • 日期
    全部过去 24 小时过去一周过去一个月去年
  • 清晰度
    全部低于 360p360p 或更高480p 或更高720p 或更高1080p 或更高
  • 源
    全部
    Dailymotion
    Vimeo
    Metacafe
    Hulu
    VEVO
    Myspace
    MTV
    CBS
    Fox
    CNN
    MSN
  • 价格
    全部免费付费
  • 清除筛选条件
  • 安全搜索:
  • 中等
    严格中等(默认)关闭
筛选器
3.6 | Unlock Orbital Speed: Launching Rockets | Rocket Science for Everyone with Marla Geha
7:58
YouTubeYaleCourses
3.6 | Unlock Orbital Speed: Launching Rockets | Rocket Science for Everyone with Marla Geha
Ever wondered how rocket scientists squeeze every bit of speed out of a launch? In this lesson, we explore a clever way to increase a rocket's final velocity: by selecting the optimal launch site on Earth. We'll uncover how taking advantage of our planet's rotation can provide a significant boost to a rocket's delta-v, allowing for more ...
已浏览 4 次16 小时之前
Velocity and Acceleration Physics
Motion in a Straight Line Class 11 | Physics Workshop Day 2 | NEET 2026 | Physics By ACP Sir
1:30:42
Motion in a Straight Line Class 11 | Physics Workshop Day 2 | NEET 2026 | Physics By ACP Sir
YouTubeSankalp NEET Vedantu
已浏览 841 次1 天前
2.6 | Orbital Flight: Speed & Direction | Rocket Science for Everyone with Yale’s Marla Geha
8:01
2.6 | Orbital Flight: Speed & Direction | Rocket Science for Everyone with Yale’s Marla Geha
YouTubeYaleCourses
16 小时之前
Taking longer to warm up or a dip in pitch velocity could be signs of an overuse injury. Hear what Tanner Bibee and Cleveland Clinic team physician, Dr. Mark Schickendantz, have to say. #GuardsBall | Cleveland Guardians
Taking longer to warm up or a dip in pitch velocity could be signs of an overuse injury. Hear what Tanner Bibee and Cleveland Clinic team physician, Dr. Mark Schickendantz, have to say. #GuardsBall | Cleveland Guardians
FacebookCleveland Guardians
已浏览 416 次1 天前
热门视频
NCERT Class 9 Science | Motion | Full Chapter Explained with Numericals & Examples
56:42
NCERT Class 9 Science | Motion | Full Chapter Explained with Numericals & Examples
YouTubeParcham Classes
已浏览 2561 次2 天之前
Velocity Components of a Ball at an Angle
5:02
Velocity Components of a Ball at an Angle
YouTubeMathsWithYohannes
已浏览 9 次1 天前
Motion in a Plane One Shot | Chapter 3 Physics Class 11 | Vectors, Projectile Motion | Anil Sir
3:10:19
Motion in a Plane One Shot | Chapter 3 Physics Class 11 | Vectors, Projectile Motion | Anil Sir
YouTubeTrigo Academy
已浏览 175 次9 小时之前
Velocity and Acceleration Examples
2.7 | Deeper Dive: Kepler’s Law & Orbits | Rocket Science for Everyone with Yale’s Marla Geha
16:47
2.7 | Deeper Dive: Kepler’s Law & Orbits | Rocket Science for Everyone with Yale’s Marla Geha
YouTubeYaleCourses
已浏览 1 次16 小时之前
🔥 Why Hip-to-Shoulder Separation Is the Secret to Velocity AND Arm Health ⚾️ We tested it with Trackman: 👉 No separation (hips shoulders rotate together) = lower velo, more drag on the arm. 👉 With separation (hips fire open, trunk stays back) = 3 MPH velo, better spin, and way less stress on the arm. 💡 Here’s why: When your hips and shoulders rotate together, the arm has to drag and force rotation = more stress less velocity. When you separate, your trunk delays & drives the whip, so the arm
🔥 Why Hip-to-Shoulder Separation Is the Secret to Velocity AND Arm Health ⚾️ We tested it with Trackman: 👉 No separation (hips shoulders rotate together) = lower velo, more drag on the arm. 👉 With separation (hips fire open, trunk stays back) = 3 MPH velo, better spin, and way less stress on the arm. 💡 Here’s why: When your hips and shoulders rotate together, the arm has to drag and force rotation = more stress less velocity. When you separate, your trunk delays & drives the whip, so the arm
FacebookTopVelocity.net
已浏览 718 次2 天之前
Chair of the Department of Emergency Medicine at Hennepin Healthcare on the Minneapolis Catholic school shooting: "We are dealing with gunshot wound injuries from apparently a high velocity weapon." | Fox News
Chair of the Department of Emergency Medicine at Hennepin Healthcare on the Minneapolis Catholic school shooting: "We are dealing with gunshot wound injuries from apparently a high velocity weapon." | Fox News
FacebookFox News
已浏览 26.4万 次2 天之前
NCERT Class 9 Science | Motion | Full Chapter Explained with Numericals & Examples
56:42
NCERT Class 9 Science | Motion | Full Chapter Explained with Nume…
已浏览 2561 次2 天之前
YouTubeParcham Classes
Velocity Components of a Ball at an Angle
5:02
Velocity Components of a Ball at an Angle
已浏览 9 次1 天前
YouTubeMathsWithYohannes
Motion in a Plane One Shot | Chapter 3 Physics Class 11 | Vectors, Projectile Motion | Anil Sir
3:10:19
Motion in a Plane One Shot | Chapter 3 Physics Class 11 | Vect…
已浏览 175 次9 小时之前
YouTubeTrigo Academy
Motion in a Straight Line Class 11 | Physics Workshop Day 2 | NEET 2026 | Physics By ACP Sir
1:30:42
Motion in a Straight Line Class 11 | Physics Workshop Day 2 | NEET 2…
已浏览 841 次1 天前
YouTubeSankalp NEET Vedantu
2.6 | Orbital Flight: Speed & Direction | Rocket Science for Everyone with Yale’s Marla Geha
8:01
2.6 | Orbital Flight: Speed & Direction | Rocket Science for Eve…
16 小时之前
YouTubeYaleCourses
Taking longer to warm up or a dip in pitch velocity could be signs of an overuse injury. Hear what Tanner Bibee and Cleveland Clinic team physician, Dr. Mark Schickendantz, have to say. #GuardsBall | Cleveland Guardians
Taking longer to warm up or a dip in pitch velocity could be signs of a…
已浏览 416 次1 天前
FacebookCleveland Guardians
2.7 | Deeper Dive: Kepler’s Law & Orbits | Rocket Science for Everyone with Yale’s Marla Geha
16:47
2.7 | Deeper Dive: Kepler’s Law & Orbits | Rocket Science for Everyo…
已浏览 1 次16 小时之前
YouTubeYaleCourses
🔥 Why Hip-to-Shoulder Separation Is the Secret to Velocity AND Arm He…
已浏览 718 次2 天之前
FacebookTopVelocity.net
Chair of the Department of Emergency Medicine at Hennepin …
已浏览 26.4万 次2 天之前
FacebookFox News
观看更多视频
静态缩略图占位符
更多类似内容
反馈
  • 隐私
  • 条款