To calculate the kinetic energy of the car at point B, we first need to determine its velocity at that point. We can use the work-energy principle to relate the work done by the driving force to the change in kinetic energy of the car:
Work done by driving force = Change in kinetic energy
The work done by the driving force is equal to the product of the force and the displacement:
Work done = Force x Displacement = 66 MN x 150 m = 9.9 GJ
The change in kinetic energy is equal to the final kinetic energy minus the initial kinetic energy. Assuming the car starts from rest at point A, its initial kinetic energy is zero. Therefore, the final kinetic energy at point B is equal to the work done by the driving force:
Final kinetic energy = Work done = 9.9 GJ
Note that we converted the force to MN (meganewtons) and the energy to GJ (gigajoules) to match the SI unit system commonly used in physics calculations.