A track meet is scheduled to be held in a city that is at high altitude. One of the runners lives near a beach. To improve her chances of winning a medal, the runner decides to train for a number of weeks in the mountains. She hopes that this will increase the number of red blood cells in her blood. Which function of the circulatory system does she hope to improve?

The question is incomplete, the complete question is;

A track meet is scheduled to be held in a city that is at high altitude.  One of the runners lives near a beach.  To improve her chances of winning a medal, the runner decides to train for a number of weeks in the mountains.  She hopes that this will increase her number of red blood cells.  Which function of the circulatory system does she hope to improve?

delivery of disease-fighting cells to body tissue

delivery of oxygen to body tissues

delivery of blood-clotting materials to body tissues

delivery of nutrients to body tissue

delivery of oxygen to body tissues

Explanation:

We all know that pressure decreases with height. At a higher altitude, the pressure of air is much lower. This causes breathing difficulty especially during a strenuous activity such as athletics.

At high altitude the breathing rate doubles. Also, additional red blood cells and capillaries are produced to carry more oxygen, delivering more oxygen to body tissues.  The lungs as well increases in size.

This acclimatization to high altitude increases the level of endurance of athletes and gives them comparative advantage at sporting events.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.