If a man increase his speed of motion from 2m/s to 4m/s .His kinetic energy will increase to how times the initial kinetic energy. *
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Answer:
Kinetic energy = 0.5 * m * v²
Initial KE = 0.5 * m * 2 * 2 = 2m
Final KE = 0.5 * m * 4 * 4 = 8m
Final KE / initial KE = 8m/2m = 4
Therefore, the kinetic energy changes to 4 times the initial kinetic energy
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