You have said that the car's mass is 1,500 kg, and its acceleration is 2 m/s² .
This information leads directly to the net force on the car,
by way of Newton's 2nd law of motion:
Force = (mass) x (acceleration)
Force = (1,500 kg) x (2 m/s²) = 3,000 kg-m/s² = 3,000 newtons
