Hello!

The subject of this sentence is "Yo" (I), so we must use the first-person singular conjugation.
Thus, the correct conjugation ends with an "o", or "Pruebo". Choice A is the correct answer.
Cree en es the correct answer
Answer:
Data:
f=28,8N
m=43,500g >43.5kg
m= 43,500g*1kg/1000g =43.5kg
a=f/m
a=28.8N/43.5kg
a=0.66m/s²
A Álvaro Le duelen las piernas. le