Question

If the percentage error in the measurement of mass and velocity of a body is 5% and 4% calculate the percentage error in kinetic energy

Answer 1

Answer would be 14%

M=4% and v=5%

KE=1/2 MV^2

4%+2×5% = 14%

Answer 2

Answer:

13%

Explanation:

K.E=1/2 MV^2

% error in K.E=%error in mass + 2 x % error in velocity

So,% error in K.E=5+2x4=5+8=13%