The correct answer to the question is [tex]2.42\times 10^{-3}\ J[/tex] i.e the kinetic energy of the housefly is [tex]2.42\times 10^{-3}\ J[/tex]
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 = [tex]\frac{1}{2}mv^2[/tex]
Hence, the kinetic energy of the housefly is calculated as -
K.E = [tex]\frac{1}{2}mv^2[/tex]
= [tex]\frac{1}{2}\times 0.00100\times (2.20)^2\ Joule[/tex]
= [tex]0.00242\ J[/tex]
= [tex]2.42\times 10^{-3}\ J[/tex] [ANS]
Here, joule ( J) is the unit of energy.
Hence, the kinetic energy of the housefly is [tex]2.42\times 10^{-3}\ J[/tex]
