Structure and function of the dermis in general Structure; deep part of skin; connective tissue composed of two layers function; is responsible for the structural strength and flexibility of the skin; the epidermis exchanges gases nutrients and waste products with blood vessels in the dermis
My new answer: Usain Bolt acheived a top speed of 27.28 mph or 43.90 kph in travellng the 2 fastest consecutive 60-70 & 70-80, 10m splits ever of .82 seconds. We'll leave out 4x100m splits as I don't have them for Team Jamaica's WR from Beijing.
Usain Bolt is the fastest man on the planet. He's the world record holder in the 100 and 200 metre sprints. We can easily calculate Usain Bolt's average speed. Speed is the change in distance over time. We know how long it took him to run 100 and 200 metres, so we can work out his speed. Those numbers only show Usain Bolt's average speed.