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Grade: 9

                        

Calculate the work required to be done to stop a bus of mass thousand kg moving at a velocity of 36 kilometre per hour

one month ago

Answers : (1)

ats
102 Points
							
The work done in stopping the bus will be equal to change in its kinetic energy.
36 km/hr = 10 m/s
Initial kinetic energy = ½ x m x v2
                                 = ½ x 1000 kg x (10 m/s)2
                                 = 50000 Joules
Final kinetic energy = 0
 
Work done = | Change in kinetic energy | = 50000 J
 
one month ago
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