beta, jab gun chalti hai to bullet aage jaati hai aur gun piche ko dhakke deti hai, dono ka mila ke momentum waise hi rehta hai jaise pehle tha. Jaise ek 0.01 kg ki bullet 1000 m/s se nikle, uska momentum 10 kg m/s hota hai, to gun bhi utna hi piche ko momentum legi. Ye wahi cheez hai jo mere bete ne samjhane ki koshish ki thi, par main exam se pehle sirf ratt leta tha — aaj pata chala, yehi to principle hai jisse hamara purana ceiling fan gira tha jab uski ek blade toot gayi thi, baaki tez piche ko ghoomi thi!
#chess#blitz
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