Answer :
The question does not provide enough information to complete the answer, so I'll assume the needed data to help you to solve your own problem
Answer:
The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile
Explanation:
Kinetic Energy
Is the capacity of a body to do work due to its speed and is computed by
[tex]\displaystyle K=\frac{mv^2}{2}[/tex]
We are not given enough data to compare the kinetic energy of the fly with that of the automobile. We'll assume the following characteristics:
[tex]m_a=500\ kg[/tex]
[tex]v_a=10\ m/s[/tex]
So its kinetic energy is
[tex]\displaystyle K_a=\frac{(500)10^2}{2}[/tex]
[tex]\displaystyle K_a=25,000\ J[/tex]
The mass of the fly is
[tex]m_f=0.55\ gr=0.00055\ kg[/tex]
To have the same kinetic as the automobile:
[tex]\displaystyle \frac{m_fv_f^2}{2}=25,000[/tex]
Solving for [tex]v_f[/tex]
[tex]\displaystyle v_f=\sqrt{\frac{2(25,000))}{m_f}}[/tex]
[tex]\displaystyle v_f=\sqrt{\frac{50,000}{0.00055}}[/tex]
[tex]v_f=9,534.6\ m/s[/tex]
The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile