Answer:
6m/s
Step-by-step explanation:
Given parameters: 
Initial velocity = 0m/s
Acceleration = 2m/s²
Distance = 9m
Unknown: 
Final velocity = ? 
Solution: 
To solve this problem, we use the expression below: 
 v² = u² + 2as 
v is the final velocity 
u is the initial velocity 
a is the acceleration 
s is the distance 
 v² = 0² + (2 x 2 x 9) = 36 
 v = 6m/s