Question

What is the percentage error in the measurement of the kinetic energy of a body, if

there is a positive error of 50% in the speed of the body

a) 125%. b) 30% c) 50%. d) 100%​

Answer 1

Answer:

So error% in kinetic energy=1/2m((1.5v)^2)-1/2 mv^2 /(1/2mv^2) ×100 2.25v^2-v^2 /v^2 =1.25×100=125%. This should be identified with error and positive errors are taking place in right measurement of the body. It highlights in kinetic energy and total value can be measured.

Answer 2

Answer is attached.

Option D] 100% is correct.