Answer:
896 kJ
Explanation:
KInetic Energy = 1/2 m v^2 
                          = 1/2 (1120)(40^2) = 896 000 J    or  896 kJ
 
        
             
        
        
        
Answer:
Spherical mirror is a mirror with a curved reflecting surface. 
 
        
             
        
        
        
Answer:
The  velocity is  
Explanation:
From the question we are told that 
    The  mass of the bullet is  
     The initial speed of the bullet is  
    The mass of the target is  
     The  initial velocity of target is  
     The  final velocity of the bullet is  is  
     
Generally according to the law of momentum conservation we have that 
       
=>   
=>    
 
        
             
        
        
        
<u>Answer:</u>
a) Height of cliff = 44.145 meter
b) 7.5 meter far from its base the diver hit the water.
<u>Explanation:</u>
  We have equation of motion ,  , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
Diver's vertical motion:
    Initial velocity = 0 m/s, acceleration = 9.8  , we need to calculate displacement when time is 3 seconds.
, we need to calculate displacement when time is 3 seconds.
   
  So height of cliff = 44.145 meter.
b) Diver's horizontal motion:
 Initial velocity = 2.5 m/s, acceleration = 0  , we need to calculate displacement when time is 3 seconds.
, we need to calculate displacement when time is 3 seconds.
 
 So 7.5 meter far from its base the diver hit the water.
 
        
             
        
        
        
(5 bulbs) x (25 watt/bulb) x (6 hour/day) x (30 day/month) =
             (5 x 25 x 6 x 30) watt-hour/month = 
                 22,500 watt-hour/month .
The most common unit of electrical energy used for billing purposes 
is the 'kilowatt-hour' = 1,000 watt-hours .
               22,500 watt-hour/month =  <em>22.5 kWh/month</em>.
             (22.5 kWh/month) x (1.50 Rs/kWh) =  <em>33.75 Rs / month
</em>