Percentage erros in the measurement of mass and speed are 2% and 3% respectively. The error in the estimation of kinetic energy obtained by measuring mass and speed will be:

Options

A. `5%`
B. `1%`
C. `8%`
D. `11%`

Answer

C

Explanation

Kinetic energy , `E = (1)/(2) mv^(2)`
`( Delta E) /( E) xx 100 = ( Delta m )/( m) xx 100 + 2( Delta v)/( v) xx 100 = 2 +2 xx 3 = 8%`