Arif has recently quit smoking. what benefit can he expect to occur within a few hours of quitting?

Explanation:

Smoking is a practice in which a material is burned and the smoke is inhaled or breathed. The smoke is absorbed in the bloodstream. The smoking is associated with the direct ailments of respiratory and circulatory system.

Benefits of quitting smoking involves the lowering of the blood pressure and heart rate almost immediately within the few hours of quitting. Thus the risk of heart attack will be reduced. Other benefits are thin blood, lowering in cholesterol levels, cleaning of the lungs, better vision, sharp hearing, clean mouth, clear skin.

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.

it was given as a lesson and guide for prayer.