12. you take a trip to dallas, 446km from san antonio. if it took 6 hours and 30 minutes (there was
a wreck in austin, of what was your average velocity to dallas? let's say you take the
highway 130 toll road coming back and you average 105km/hr. how long did it take you to get
from dallas to san antonio? note: remember, it asked for velocities, so what do you need to
have a complete

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.