Which is 20 miles per hour north an example of?
a. acceleration
b. direction
c. speed
d. velocity

The correct answer is D. Velocity

Explanation:

The concept "velocity" is used in mechanics and other field that study motion to describe the  change of position an object has based on the speed which refers to how fast an object goes and the direction of motion which is determined by the cardinal point such as north, east, west or south the object moves. This implies in velocity units that express speed such as miles per hour or kilometers per hour along with words that show direction such as north, northeast or southwest are used to study the movement of a body and therefore the statement "20 miles per hour north" that includes speed (20 miles) and direction (north) is a clear example of velocity.

august 1585. hope this !

relations between the soviet union and the united states were driven by a complex interplay of ideological, political, and economic factors, which led to shifts between cautious cooperation and often bitter superpower rivalry over the years. the distinct differences in the political systems of the two countries often prevented them from reaching a mutual understanding on key policy issues and even, as in the case of the cuban missile crisis, brought them to the brink of war.

the united states government was initially hostile to the soviet leaders for taking russia out of world war i and was opposed to a state ideologically based on communism. although the united states embarked on a famine relief program in the soviet union in the early 1920s and american businessmen established commercial ties there during the period of the new economic policy (1921–29), the two countries did not establish diplomatic relations until 1933. by that time, the totalitarian nature of joseph stalin's regime presented an insurmountable obstacle to friendly relations with the west. although world war ii brought the two countries into alliance, based on the common aim of defeating nazi germany, the soviet union's aggressive, antidemocratic policy toward eastern europe had created tensions even before the war ended.