Answer:
<em>The final velocity is 20 m/s.</em>
Explanation:
<u>Constant Acceleration Motion</u>
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Being a the constant acceleration, vo the initial speed, and t the time, the final speed can be calculated as follows:

The provided data is: vo=10 m/s,  , t=2 s. The final velocity is:
, t=2 s. The final velocity is:


The final velocity is 20 m/s.
 
        
             
        
        
        
Cumulus belongs to vertical clouds and status to low
        
             
        
        
        
The answer is oil and water. If you want I could give you the reason too
        
                    
             
        
        
        
consider the motion in x-direction 
 = initial velocity in x-direction = ?
 = initial velocity in x-direction = ?
X = horizontal distance traveled = 100 m 
 = acceleration along x-direction = 0 m/s²
 = acceleration along x-direction = 0 m/s²
t = time of travel = 4.60 sec
Using the equation 
X =  t + (0.5)
 t + (0.5)  t²
 t²
100 =   (4.60)
 (4.60)
  = 21.7 m/s
 = 21.7 m/s 
consider the motion along y-direction 
 = initial velocity in y-direction = ?
 = initial velocity in y-direction = ?
Y = vertical displacement  = 0 m 
 = acceleration along x-direction = - 9.8 m/s²
 = acceleration along x-direction = - 9.8 m/s²
t = time of travel = 4.60 sec
Using the equation 
Y =  t + (0.5)
 t + (0.5)  t²
 t²
0 =  (4.60) + (0.5) (- 9.8) (4.60)²
 (4.60) + (0.5) (- 9.8) (4.60)²
 = 22.54 m/s
 = 22.54 m/s 
initial velocity is given as 
 = sqrt((
 = sqrt(( )² + (
)² + ( )²)
)²) 
 = sqrt((21.7)² + (22.54)²) = 31.3 m/s
 = sqrt((21.7)² + (22.54)²) = 31.3 m/s 
direction: θ = tan⁻¹(22.54/21.7) = 46.12 deg 
 
        
             
        
        
        
C i would think
it sounds best