A 6780 kg space probe, moving nose-first toward Jupiter at 126 m/s relative to the Sun, fires its rocket engine, ejecting 65.0 kg of exhaust at a speed of 223 m/s relative to the space probe. What is the final velocity of the probe

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s. assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.