Aprojectile is ejected into an experimental fluid at time t = 0. the initial speed is v0 and the angle to the horizontal is θ. the drag on the projectile results in an acceleration term ad = −kv, where k is a constant and v is the velocity of the projectile. determine the x- and y-components of both the velocity and displacement as functions of time. what is the terminal velocity? include the effects of gravitational acceleration.

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

Answer (d) the universe had cooled enough for atoms to combine, protons and neutrons were too far apart to form nuclei;

Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w.  to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w.  best answer is a) . work reqd is prop to velocity squared.