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...
1 Select any 15 papers 2 finish them by 4th Jan 3 after every paper, analyze the result 4 focus on mostly formula 5 focus on easy+meduim questions 6 obtain at least 150 marks if done properly