How did christianity's ethical principles its spread?

I believe the answer is: Broad appeal from the Jews to gentite from rich to poor common man to educated roman

The christianity put more emphasis on how it is harder for the rich to enter heaven compared tot he poor. The appeal that the poor could somehow be 'better' than the rich at something help the religion become really popular among the commonfolks at that time.

a is the answer because it just is

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