The speed of a bullet of mass 20g is 216km/hr what is it's kinetic energy
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Answer:
kinetic energy = 1/2 m v^2
velocity = 216 km / hr
= 216 × 5/18 = 60 m/sec
therefore Kinetic energy = 1/2 × 20 × 10^(-3) × (60)^2 = 36 J
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