У вашего броузера проблема в совместимости с HTML5
Learn by example with this unedited video recorded during office hours. Try to solve along with the video by pausing and playing....even calculating along will help. If you find the pace a little slow, try watching at a faster speed.
This video is a projectile motion example problem where we use the x-y components to determine the path of the projectile. Then define acceleration in normal and tangential components.
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