Problem 1: A rocket has exhaust velocity u = 3500m/s and exhaust pressure pe = 1.1 atm and area A = 2m. The rocket is launched at sea level, and its initial mass is 2000kg. Find: a) The equivalent exhaust velocity, Ueq b) The specific impulse, Isp c) The amount of fuel it must expend in order to develop Au = 3000m/s