A metal ball of mass 2 kg moving with a speed of 36 km/hr has a head-on collision with a stationary ball of mass 3 kg. If after collision, both the balls move together, then loss in kinetic energy due to collision is
A)40 J
B)60 J
C)100 J
D)140 J
A)40 J
B)60 J
C)100 J
D)140 J
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