The correct answer to the question is \(2.42\times 10^{-3}\ J\) i.e the kinetic energy of the housefly is \(2.42\times 10^{-3}\ J\)
CALCULATION:
As per the question, the mass of housefly m = 0.00100 kg,
The speed of the housefly v = 2.20 m/s.
We are asked to calculate the kinetic energy of the housefly.
The kinetic energy of a body having mass m and moving with velocity v is calculated as -
Kinetic energy K.E = \(\frac{1}{2}mv^2\)
Hence, the kinetic energy of the housefly is calculated as -
K.E = \(\frac{1}{2}mv^2\)
= \(\frac{1}{2}\times 0.00100\times (2.20)^2\ Joule\)
= \(0.00242\ J\)
= \(2.42\times 10^{-3}\ J\) [ANS]
Here, joule ( J) is the unit of energy.
Hence, the kinetic energy of the housefly is \(2.42\times 10^{-3}\ J\)
