The terminal velocity of a free-falling human depends on the mass and density of the person. In general, the heavier the body, the longer it can accelerate before drag holds it at a constant speed. For a typical human, t... More »

The terminal velocity of a skydiver in freefall is approximately 50 to 60 miles per second or roughly 125 to 135 mph. While the term has been popularized by skydiving enthusiasts, however, the concept of terminal velocit... More »

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Terminal velocities of bullets vary by caliber, but can reach 300 to 700 feet per second. For example, a .30 caliber bullet's terminal velocity is 300 feet per second. If the bullet is shot at an angle and keeps its arc,... More »

Unlike other parts of the human body, the ears and nose continue to grow for a person's entire life. This is because the nose and ears contain cartilage, which never stops growing. More »

A calcified granuloma is an area of inflammation in tissue that has calcified over time until it has the same density as bone. The most common cause for a granuloma in the lungs is a fungal infection called histoplasmosi... More »

The density of muscle is about 18 percent greater than that of fat. So while a pound of fat and a pound of muscle weigh the same amount, five pounds of muscle occupy approximately the same amount of space as four pounds ... More »

How people float is based on their specific density, so people who float have a lower density than people who don't float well. Specifically, people with a higher fat content in their bodies float better than people with... More »