Davis filled four empty film canisters with four different materials. He then placed the lids on the canisters and put them into an aquarium filled with water. Which of the following conclusions is supported by Davis' results?Canister A is filled with:

yes definetly because you are using energy

i think that the answer is c

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