Question

the kinetic energy of a particle depends on the square of speed of the particle if the error in the measurement of the speed is 30% the error in the measurement of kinetic energy will be​

Answer 1

Answer:

kE directly propersanol v^2

kE2 /KE1 = [v1^2/V2^2]

Given that the error in measurement of speed is 30%

therefore,

KE2 /KE2 =[100 + 30 /100]^2

KE2 /KE1 = 1. 69

KE2 = 1.69KE1

% Change in kinetic energy is ---

KE2 - KE1 / KE1 =100

1.69KE1 -KE1 /KE1

69%Ans.

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