Question

The rolling resistance of a car depends on its weight as: F = 0.006 mg. How far will a car of 1200 kg roll if the gear is put in neutral when it drives at 90 km/h on a level road without air resistance? 

Answer 1

The car decreases its kinetic energy to zero due to the force (constant) acting over the distance.

Remark: Over 5 km! The air resistance is much higher than the rolling resistance so this is not a realistic number by itself.