Force exerted by the bullet = mass * acceleration = 0.013 * 850 = 11.05 Newtons.
the rifle exerts same force in opposite direction so we have
11.05 = 3.5 * a
acceleration = 11.05 / 3.5 =  3.16 m /s^-2
        
                    
             
        
        
        
Answer:
D. Uranium
Explanation:
I just got the answer right on my quiz.
 
        
             
        
        
        
Strong alien you got there good luck bud you never asked a question
        
             
        
        
        
Answer:
I know the first one is C.) 4J. I don't know of the answer for the second oneis suppose to be in N/m form? but I got
2,500N/m