The graph below shows a reaction with a catalyst. How did the
addition of the catalyst change the graph?
Potential Energy
2
NGOCTOn Progress ISS
O
A. It lowered the height of part 1 and increased the height of
part 3.
O
O
B. It lowered the height of part 2.
c. It increased the height of part 1 and decreased the height
of part 3.
O
D. It increased the height of part 2.

the answer to this question is 3.

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds