Video narration
Gend ki udaan dekhkar lagta hai, iska ghumav ek mushkil samikaran maangta hai. Lekin jab aap gend uchhalte hain, uski aage aur upar-neeche ki chaal saath chalti hain; hisaab alag rakhein. Hawa ka asar chhod dein, aur maan lein ki gend usi oonchai par lautati hai. Shuruaati chaal baantein: horizontal component, yani aage ki chaal, vx = v cos theta; vertical component, yani upar ki chaal, vy = v sin theta. Theta kshaitij disha se mapa gaya kon hai. Ab upar-neeche ki chaal se udaan ka samay nikaalein: t = 2vy/g. Guruttv neeche ki or hai, aur g lagbhag 9.8 meter prati second varg hai. Dono dishaon ki chaal alag nikaalte hain, lekin samay ek hi hota hai. Ab kshaitij chaal sthir rehti hai; use is samay se guna karein: x = vx t. Yahi gend ki aage ki doori hai. Yaad rakhein: gend ke liye pehle upar-neeche se samay, phir usi se aage ki doori.