Answer:
D is the answer 
Explanation:
D is the most highest one so 
the answer is D
 
        
                    
             
        
        
        
A :-) for this question , we should apply 
a = v - u by t 
Given - u = 4.77 m/s 
 v = 23.5 m/s 
 t = 5.18 m/s 
Solution - 
a = v - u by t 
a = 23.5 - 4.77
a = 28.27 m/s^2 
.:. The acceleration is 28.27 m/s^2
        
             
        
        
        
Answer:
 Potential Energy to Kenetic Energy
Explanation:
When holding a ball in the air, the ball has potential energy. Once you drop the ball, the ball gains Kenetic Energy
 
        
             
        
        
        
solution:
As Given plane is flying in east direction.
It throws back some supplies to designated target.
Time taken by the supply to reach the target =10 seconds
g = Acceleration due to gravity = - 9.8 m/s²[Taken negative as object is falling Downwards]
As we have to find distance from the ground to plane which is given by d.
d = 
  =  meters
 meters
Distance from the ground where supplies has to be land  to plane  =  Option B =490 meters