Answer to Question #174857 in Physics for Sam

Question

An airplane with a welght of 3500 N flying through the air. The vertical lift on the plane is 4500 N, the friction with the air is 1500 N, and the force applied by the engines Draw a free body diagram of this situation and find the net force acting on the alrplane. Your work should include both the size of the net force and the direction it points

Answer 1

$$F_{net}=4500-3500-1500=-500\ N$$

Direction: downwards.