Respuesta :

jaaelynnk

Answer:

i’m confused what lol ?

Answer:

With down being the positive direction,  

 

v(t) = vo + gt

 

v(t) = (20 + 9.8t) m/s,

 

with t in seconds.

 

v(3) = [20 + 9.8(3)] m/s = 49.4 m/s

Explanation: