Why does the force normal vector always point upwards? pls help i’ll mark as brainliest

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

How do the forces acting on a boat compare to the force acting on a plane ?