Final answer:
The kinetic energy of the ladybug is 0.36 J. The correct answer is option A.
Step-by-step explanation:
Kinetic energy is the energy possessed by an object due to its motion. It is given by the equation: KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity.
To find the kinetic energy of the ladybug, we need to convert its velocity to m/s as the equation requires the velocity to be in meters per second. Since 1 km = 1000 m and 1 h = 3600 s, we can convert 3.45 km/h to m/s by multiplying it by (1000/3600).
Once we have the velocity in m/s, we can substitute the values into the equation. The mass of the ladybug is 31.8 mg, which is equivalent to (31.8 * 10^-6) kg.
Calculating:
KE = 0.5 * (31.8 * 10^-6) * (3.45 * (1000/3600))^2) = 0.0000036 J
Therefore, the kinetic energy of the ladybug is 0.0000036 J, which is approximately 0.36 J.