This diagram represents the path of an object during projectile motion. The object is shot upwards on the left and hits the ground on the right. Focusing only on the vertical velocities at the five indicated points, label the diagram to make each statement true. velocity at C > velocity at D > velocity at E
velocity at B is negative
velocity at C has the same magnitude as A but at A, the projectile is moving downwards

A parabolic path begins from the assumed ground level, rises vertically, reaches a peak, and then descends back to the same ground level. One data point is shown at the beginning ground level, one approximately two-thirds up to the peak, one at the peak, one approximately two -thirds of the way back down to the ground, and one at the end ground level.

that would be because of both gravity and friction. so     c

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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amplitude

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