Question

The percentage error in the measurement of mass of body is 0.75% and the percentage error in the measurement of its speed is 1.85%. then the percentage error in the measurement of its kinetic energy is

Answer 1

Answer:

4.65%

Explanation:

Answer 2

Answer:

4.45%

Explanation:

we know

k=1/2 mv²

so,

∆k/k*100=∆m/m*100 +2 x ∆v/v*100

∆k/k *100= 0.75 % + 2 × 1.85 %

∆k/k *100=0.75% +3.70 %

∆k/k *100=4.45 %

thus, percentage error in measurement of kinetic energy=4.45 %