Answer:
The second option. A 100 kg car going 100 m/s has the most kinetic energy.
Step-by-step explanation:
The formula for kinetic energy is

We have 3 situations;
1)
and

2)
and

3)
and

Substitute the values for each situation into the kinetic energy equation.
1)

2)

3)

Situation 2 has the greatest kinetic energy.