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प्रश्न
A body of mass 60 kg is moving with a speed 50 m s_1. Find its kinetic energy.
उत्तर
mass m = 60 kg
Speed v = 50 mS1
K.E = 1/2 MV2
1/2 × 60 × 50 × 50 = 75000 kgm/s or Joule
K.E = 75/10 × 1000 × 10 = 7.5 × 104 J
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