newtow ke first law aur second law theoritically same hai par, first law ineratia ko define karta hai, ki "koi bhi object ya toh stationary ya toh motion mai hi rahegi jab tak uss par kai external force apply na ho" , isse defination ke adhar par ek frame set hui he, jeese inertial frame mana gaya hai, in reality inertial frame does not exist, kyu ki hum earth par khade hai toh hum earth ke hisab se stationary hai par earth rotate and revolve kar raha hai, sun apne galactic center par gum raha hai aur sath sath universe expand ho raha hai , toh batao hum stationary kaise huae, isse uljan ko sul jane ke lia "inertial frame" earth ko supose kiya gaya hai ,isse inertial frame ke benna ham newton second law nahi istamal kar sakte.
jayda lamba bhashan ke liae mafi chahta hu, mere jamjane mai kol bhul ho toh maf kar na.
