We are asked to determine the force required to accelerate a 1500 kg mass at a rate of 3 meters per second squared. To do that we will use Newton's second law, that is:

Where "F" is the force, "m" is the mass, and "a" is the acceleration. Replacing the values:
![F=(1500\operatorname{kg})(3(m)/(s^2))]()
Solving the operations:

Therefore, the force required is 4500 Newtons.