Question

An airplane is accelerating forward due to a force of 3320 newtons acting 30 on it. Then it encounters wind resistance that exerts a backward force of 550 newtons. What is the net force, in newtons, acting on the airplane?

please help

Answer 1

For the purpose of the problem we can consider only the motion on the x-axis (horizontal direction).
We have two forces:the horizontal component of the force F of 3320 N acting forward, and the backward force of 550 N.
The horizontal component of the forward force is

`3320 N \cdot cos 30^(\circ) = 2875 N`
So, the net force is

`F_(net) = 2875 N - 550 N =2325 N`
in the forward direction.