Numerical
If the speed of a particle is increased four times, how will its kinetic energy be affected?
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Solution
K.E, K = `1/2 mv²
if speed is incresed four times
K.E,K' = `1/2` m(4v)²
or K' = 16 x `1/2` mv² = 16K
thus K.E becomes sisxteen times
Concept: Definition of Work
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