1. The problem statement, all variables and given/known data The take-off speed of a given airplane is 250 mi/h. If the take-off weight is 110,000 Kg, what is average the thrust force exerted by the engines? 2. Relevant equations w=mg ,F=ma , F=mW 3. The attempt at a solution the mi/h confuses me and I dont know which formula to use and is the average thrust force the net force?