A and c 
Because it defines the boundaries of the system
        
                    
             
        
        
        
Answer:
Distance = 150 meters
Explanation:
Given the following data;
Work done = 6,000 Joules
Force = 40 Newton
To find the total distance covered by the wheelbarrow;
Workdone = force * distance
Substituting into the formula, we have;
6000 = 40 * distance
Distance = 6000/40
Distance = 150 meters
Therefore, the total distance the wheelbarrow was pushed is 150 meters.
 
        
             
        
        
        
In longitudinal waves the places where the coils are bunched together are called *
Compressions