Colonel John Stapp led the U. S. Air Force Aero Medical Laboratory’s research into the effects of high accelerations on the human body. On Stapp’s final run, he rode a rocket-propelled sled that reached a speed of 284.4 m/s (632 mph) and then stopped with the aid of water brakes in 1.2 seconds. Stapp was barely conscious and lost his vision for several days, but recovered. Determine his acceleration while stopping and the distance he travelled while stopping.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.