Arocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 44.1m/s^2 . the acceleration period lasts for time 7.00s until the fuel is exhausted. after that, the rocket is in free fall. find the maximum height y_max reached by the rocket. ignore air resistance and assume a constant acceleration due to gravity equal to 9.80 rm{m/s^2} .

The acceleration and distance is related to the following expression:
y=v0*t + a*t^2/2 ; v0=0 
y=44.1*100/2 = 2205m 
hence, the speed will be 
v=0 + a*t = 441m/s 
from that height it will just be subjected to the gravitational acceleration 
0=v_acc^2 -2g*y_free 
y_free = v_acc^2/2g = 9922.5m 
y_max = y_acc+y_free = 441+9922.5 =10363.5m

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.