Why was there no central government in Japan from the 1300s to the 1500s?

There are two reasons for this. In the first place, there was constant warfare among the powerful regional feudal lords, the daimyos, who vied for power  and influence. This debilitated any central authority. The feudal clans managed big armies of samurais (warriors). The other reason is the symbolic role played by the emperor. He was deemed as a living deity, but he had little effective political power. This status quo lasted until the early 17th century, when the powerful Tokugawa clan managed to defeat its rivals and impose a military and political unity over the whole Japanese territory.

Explanation:

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces

recent improvements in technology/telecommunication/internet have increased the pace of globalization.

explanation:

recent improvements in technology have enhanced the pace of globalization. it is not difficult to recognize that technology has created the human race one big issue. there are several aspects to technology but they all serve to meet us the further. i can beat and be friends with a fellow, thousands of miles away. technology has also bridged the knowledge gap and has presented for the ready transfer of ideas and values.