Atechnologically oriented diving coach wishes to analyze the vertical "push off" for members of the diving team. in order to do this, she simulates the diving process by having the athletes drop (free fall) from an adjustable height platform onto a "force-o-meter" which measures the vertical force the divers exert on the ground as a function of time. for a particular diver with a mass of 62.5 kg, she sets the adjustable height platform at 0.615 m and instructs the diver to free fall onto the "force-o-meter" and push off as she would in a dive. the computer readout shows that the diver was in contact with the meter for 0.750 s and that the force exerted on the platform may be described by the function: f(t) = (12,000 n/s)t − (16,000 n/s2)t2where the force will be in newtons when the time is seconds. determine the following.(a) speed of the diver when she lands on the meter (enter your answer to at least two decimal places.)m/s(b) vertical upward impulse the meter imparts to the diver (enter your answer to at least four significant figures.)n · s (c) speed of the diver when she leaves the meterm/s(d) height of the diver's jump after leaving the meterm

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

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