Question

Find the energy of a mosquitoes weighing 0.01g are flying at a speed of 0.5m/s

Answer 1

The kinetic energy of a mosquito

$$KE=\frac{mv^2}{2}$$

$$=\frac{0.01\times 10^{-3}\:\rm kg\times (0.5\:\rm m/s)^2}{2}=0.00000125\:\rm J=1.25\: \mu J$$