It's really complicated. total stopping distance is the sum of the perception-reaction distance and the braking distance. D_{total}=D_{p-r}+D_{braking}=v t_{p-r}+ \frac{v^2}{2 \mu g}. A common baseline value of t_{p-r}=1.5 s, \mu=0.7 is used in stopping distance charts.
Hematology is the study of blood in health and disease. It includes problems with the red blood cells, white blood cells, platelets, blood vessels, bone marrow, lymph nodes, spleen, and the proteins involved in bleeding and clotting (hemostasis and thrombosis).hen something is wrong with your blood, it can affect your total health. That is why it is important for you to know about some of the common blood disorders that may affect you.
Hematology is that medical specialty which concerns itself with the blood, and the generation of blood in the bone marrow. Hematology studies the red and white blood cells, their relative proportions and general cell health, and the diseases that are caused by imbalances between them, notably leukemia and anemia. Red blood cells carry oxygen from the lungs to the various parts of the body, and white blood cells fight infections.