1. Problem A launched rocket emitting gas with a speed of 1500 m/sec relative to rocket and with flowrate of 100 kg/sec. If net mass of rocket is 5000 kg, find it's acceleration. 2. Equations F=ma F=d(mv)/dt Conservation of momentum m1u1 + m2u2 = m1v1 + m2v2 3.Attempt Flowrate = 100 kg/s velocity = 1500 m/s momentum downwards = mv = 100 x 1500 = 1.5 x 105 kg m/s According to conservation of momentum, i found the velocity to upward direction. m1u1 + m2u2 = m1v1 + m2v2 0 = -100 x 1500 + 5000v2 5v2 = 150 v2 = 30 m/s what should do next to find the acceleration If I use F=d(mv)/dt what is the initial velocity and final velocity. I have no idea about those two & and how to take it.