If car 1 has a greater inertia than car 2, then car 1 has a greater mass than car 2. has a greater velocity than car 2. has an unbalanced force while car 2 has a balanced force

Has more mass. Inertia is the resistance to movement, and directly proportional to mass.

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.