The speed of a motor car becomes six times, then the kinetic energy becomes
A
6 times
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B
36 times
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C
12 times
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D
24 times
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Solution
The correct option is B 36 times Kinetic energy is mathematically defined as K.E = 12mv2
Hence kinetic energy is directly proportional to the square of the velocity. Thus if we increase the speed of a motor by 6 times then the kinetic energy becomes 36 times.