Question

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

(a) 8%

(b) 2%

(c) 12%

(d) 10%

Comments

Answer is 8%

Answer 1

Correct Option (a) 8%

Explanation: 

Percentage error in mass = 2% = 2/100 and percentage error in speed = 3% = 3/100.

K.E. = 1/2mv²

Therefore the error in measurement of kinetic energy