Answer:
The speed of an object is defined as the total distance covered divided by total time taken. The velocity of an object is defined as the total displacement divided by total time taken.
Explanation:
The imaginary line that divides the earth into in this case the north and south hemispheres is called the Equator and it passes through Ecuador and actually Ecuador is the Spanish word for Equator. The French explorer La Condamine spent 10 years in Ecuador studying the equator and determined the oblate spheroid shape of the world.
20. is Memphis Tennessee
21. is Knoxville Tennessee
Either the first one or second one