Example Problem - Conservation of Momentum (5)
Channel: Thermofluids
Date: 2020-09-21

A rocket is launched vertically by combusting a solid propellant (which includes oxygen). The exhausting gases create thrust, pushing the rocket directly upwards. If the rocket (including all rocket parts and propellant) has an initial mass (M_0), the exhaust gases leave at a velocity of v_e, the mass flow rate of the exhausting gases is m_dot , gravitational acceleration is constant (G), and you neglect drag, determine an expression for the velocity of the rocket (relative to the ground) as a function of time v(t).