Answer:
The value is  
Explanation:
From the question we are told that 
    The  landing speed is  
    The  distance traveled is  
     The velocity it is reduced to is  
    
Generally the average acceleration is mathematically represented as 
       
=>  
=>   
 
        
             
        
        
        
Answer:
The answer is a.
Explanation: Billions of years ago, there were lakes and rivers in the surface of mars because mars had a denser atmosphere and higher surface temperatures which allowed a vast amount of liquid water on the surface. Recently, most of the water on mars today exist as ice.
 
        
             
        
        
        
Answer:
C. 2 and 4 
Explanation:
my teacher went over it and the answer was that
 
        
             
        
        
        
Answer:
There cannot be a force without motion and if there is no motion, then there is no force acting.
Explanation:
A force is a vector that causes an object with mass to accelerate.