Observations that deal with descriptions that cannot be expressed in numbers are called a. manipulated observations. c. qualitative observations. b. quantitative observations. d. operational observations. Please select the best answer from the choices provided A B C D

qualitative observations.

Explanation:

In a qualitative observation, the data that is dealt with is one that has to do with the sense of touch, sight, smell, taste and also hearing. This type of observation does not have anything to do with measurements that involves numbers. Examples of qualitative observation includes shapes, color, gender, citizenship.

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.