ANSWER ASAP #6 on WILL GIVE BRAINIEST TO ANSWER FIRSTTT

Answer:
20 m/s
Step-by-step explanation:
Assuming initial velocity is 0:
[tex]v_{f} = v_{i} + at[/tex]
[tex]v_{f} = at[/tex]
[tex]v_{f} =[/tex] 4m/s^2 * 5s = 20 m/s
Answer:
If you accelerate at 4 m/s/s for 5 seconds you accelerate by 20 m/s. Therefore, you started out at 3 m/s.
Step-by-step explanation: