To solve this problem it is necessary to apply the equations related to the conservation of momentum. Mathematically this can be expressed as

Where,
 = Mass of each object
= Mass of each object
 = Initial velocity of each object
 = Initial velocity of each object 
 = Final Velocity
= Final Velocity 
Since the receiver's body is static for the initial velocity we have that the equation would become



Therefore the velocity right after catching the ball is 0.0975m/s 
 
        
             
        
        
        
The horizontal force : f = k*N
k- coefficient of friction
k = f /N
N = m * g = 45 kg * 9.81 m/s² = 441.45 N
k = 25 N : 441.45 N = 0.057
Answer C) 0.057
        
             
        
        
        
Answer:
through nuclear fusion 
Explanation:
The burning of the sun is not chemical combustion. It is nuclear fusion. This combustion releases energy which we experience as the heat and light given off by the flame.
 
        
                    
             
        
        
        
The answer should be B - lasts longer.