लट् लकार: (Prasent Tense) पुरुष: एकवचनम् अर्थ द्विवचनम् अर्थ बहुवचनम् अर्थ प्रथमपुरुष: पठति पढ़ता है / पढ़ रहा है पठतः दो पढ़ते हैं / पढ़ रहे हैं पठन्ति...
Suppose an object having mass m has an initial velocity u and after certain time t it attains a velocity v. Now momentum P1=mu and P2=mv So change in momentum =P2-P1=mv-mu =m(v-u) So the rate of change...