Answers

2016-02-23T22:55:05+05:30
Increase in Kinetic Energy(K) = Final Kinetic Energy (K2)- Initial Kinetic Energy(K1) 

36 Km/h = 5*36/18 m/s
               = 5*2 m/s
               =10 m/s

72 Km/h  = 20 m/s

K= K2 -K1
   = 500(20-10)
   =500 * 10
   =5000 Joule

Answer : 5000 J
hope this helps you!!


             
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