Answer:
                        355 m/s
 355 m/s   
Explanation:
Distance = 605 km
Initial speed =  = 284 m/s
 = 284 m/s
Final velocity =  = 426 m/s
 = 426 m/s
Average speed = ?
There is two method two find average speed. In first method, using 3rd equation of motion, we find acceleration.
                         
 Then using first equation of motion, we find time
                         
Then using the formula of average velocity, we find average velocity
                          
Second method is very simple 
                                   
                                    
                                     355 m/s
 355 m/s      
 
        
             
        
        
        
Don’t trust those links they usually pull up your IP
        
             
        
        
        
Answer:
because it is an ice that is why it melt
 
        
             
        
        
        
Impulse = mass * volume is the most common equation, but you can also calculate impulse by Force * time.  So if we increase the force we need to decrease the time.
        
                    
             
        
        
        
Answer: B 100 J
Explanation: Pic Attached. Hope This Helps.