Question 16 X
Review
colorless gas; 6 valence electrons; 2 major energy levels

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

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