The correct answer is the one with 45000 kg*km/hr.
the formula is p = m*v 
 900 *50/hr  giving u 45000 
I know this is the correct answer because i have already turned it in and got a 100%.  
        
                    
             
        
        
        
Answer:
denoting, relating to, or operated by a liquid moving in a confined space under pressure.
 
        
             
        
        
        
The angular speed can be solve using the formula:
w = v / r
where w is the angular speed
v is the linear velocity
r is the radius of the object
w = ( 5 m / s ) / ( 5 cm ) ( 1 m / 100 cm )
w = 100 per second
        
                    
             
        
        
        
C. Negative force. The dog isn't going to learn that way.