Objects dropped straight or thrown horizontally from the same height 
change their vertical velocity at the same rate, and fall through equal 
vertical distances in equal time intervals.
The statement is false.  
        
             
        
        
        
Answer:
impulse = 8820 kg· or 8820 N·s
 or 8820 N·s
Explanation:
Impulse J is equal to the average force  multiplied by the elapsed time Δt or in equation form, J =
 multiplied by the elapsed time Δt or in equation form, J =  Δt
Δt
As long as your force of 450 N is constant then that value is your average force  and your elapsed time is 19.4 seconds.
 and your elapsed time is 19.4 seconds.
Multiply these values.
You will get an impulse of 8820 kg· or 8820 N·s.
 or 8820 N·s. 
 
        
             
        
        
        
Gravitational potential energy -> Kinetic energy -> Mechanical energy -> Electrical energy.
The water starts up (potential) and flows down (kinetic), the flowing water turns a big wheel (mechanical) which creates electricity (electrical).
 
        
                    
             
        
        
        
Answer:
F1= 588 N
F2= 784 N
Explanation:
Please see the attached file.