Which statements describe or apply the principal of conservation of energy? Select all that apply. * A. Energy cannot be created or destroyed; it can only be transferred from one location to

another.

B. Home insulation can reduce energy bills by conserving energy that would otherwise be lost.

* C. If the temperature in one location decreases, then the temperature in another location

increases.

D. The total energy in a closed system such as Earth stays the same.

E. Nonrenewable energy resources can be conserved, but they will eventually run out.

The total energy in a closed system such as Earth stays the same.

Explanation:

The simplest statement of the law of conservation of energy is that energy can neither be created nor destroyed but can be converted from one form to another.

A typical illustration of this principle of conservation of energy is a closed system of which our universe is an important example.

The total amount of energy in the universe is always a constant. Energy lost in one part must be equal to the energy gained on the other part.

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