The rocket is going vertically up and expels fuel at the velocity 2000m/s at the consumption rate of 2100kg/s. Initial mass of rocket is 140,000 kg. If rocket starts from rest at t = 0 seconds, how to compute vertical distance covered by rocket from t = 8 to t = 30 seconds? Use all integration Methods you have learned to compute distance covered by rocket from t = 8 to t = 30 seconds? Which method is more effectivein terms of error.