1. The problem statement, all variables and given/known data To solve this problem you will need to construct a differential equation. A picture of the situation will help. Ignore all gravitational forces. A Rocket ship of structural mass M and fuel mass m, begins at rest relative to a gas cloud. The ship burns fuel at the rate ω which is exhausted with speed v relative to the ship. The ship obtains pure fuel from the gas cloud at the rate 2ω. Find the velocity of the ship as a function of time. 2. Relevant equations 3. The attempt at a solution All I can think of is using momentum... P initial = 0, but I do not now how to construct the equation for P final.