Juanita is riding the school bus. The bus stops as the driver applies the brakes. Which of these best describes this situation? *

The bus is gaining energy because of friction.

The school bus does not lose or gain kinetic energy.

There is no force acting on the bus, so it stops moving.

A force is changing the motion of the bus.

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.

i think the answer is a and b

i wish you luck