Compute your average velocity in the following two cases: (a) you walk 73.2m at a speed of 1.22m/s and then run 7302m at a soeed of 3.05 m/s along a stright track. (b) you walk for 1.00min at a speed of 1.22m/s and then run for 1.00 at 3.05m/s along a stright track. (c) graph x verses t for both cases and indicate how the average velocity is found on the graph

a) 3.00 m/s, approximately and b) 2.135 m/s

Explanation:

a) x1 = 73.2 m and v1 = 1.22 m/s, then

;

x2 = 7302 m and v2 = 3.05 m/s, then

.

So the average speed is

.

b) t1 = 60 s and v1 = 1.22 m/s, then

;

t2 = 60 s and v2 = 3.05 m/s, then

;

So the average speed is

.

c) Plot cumulative distance Vs. cumulative time, the slope of the line going through the origen and the final coordinate, is the velocity

The answer is b hope this

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.