चाल, वेग, त्वरण तथा उनके प्रकार | speed, velocity, acceleration and their kinds | 11th | Verma sir | 11th class physics in hindi medium | chal, veg tatha twaran aur unke prakar
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Негізгі бет चाल, वेग, त्वरण तथा उनके प्रकार | speed, velocity, acceleration and their kinds | 11th | Verma sir
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