Aforce vector describes what two things about a force

Explanation:

A quantity which is described by their magnitude and direction both are said to be vector. for example, velocity, displacement, force, etc.

Force is a vector quantity. A force vector gives the information about the magnitude of force and its direction in which it is acting.

For example, there is a force vector 5 N acting east.

It means the magnitude of force is 5 N and the direction in which the force is acting is east.

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.