1. The problem statement, all variables and given/known data Jet A 2.75*10^6 N catapult jet plane is ready for takeoff. If the jets engines supply a constant thrust of 6.35*10^6 N, how much runway will it need to reach its minimum takeoff speed of 285 km/h. velocity initial = 0 km/hr velocity final = 285 km/hr F = 2.75*10^6 N F= 6.35*10^6 N Distance of runway = ? 2. Relevant equations ??? See below 3. The attempt at a solution Ok so here's my problem. I can't figure out what equation(s) to use. I'm not even sure if we've been taught it yet (I'm doing the homework a few days in advance cause I'm doing really bad so far in the class) but I can't find the equation in the book. So here's what I've done so far: Vf = 285 km/hr * 1000m/km = 285000 m/hr * 1 hr/3600 s = 79.2 m/s Velocity final = 79.2 m/s Velocity initial = 0 m/s So I need help with what equation to use and I have one other question. Why are there 2 forces? Are you supposed to add them and get the net force or am I way off base? I'm so confused.