Final answer:
The question asks for the mass of a car plus its occupants given certain forces and acceleration. To solve the problem, we can use Newton's Second Law of Motion and rearrange the formula to solve for mass.
Step-by-step explanation:
The subject of this question is Physics. It is a high school level question.
To solve the problem, we need to use Newton's Second Law of Motion which states that the force acting on an object is equal to its mass multiplied by its acceleration, or F = ma.
In this case, the force exerted by the car's wheels is 2100 N, the force of friction is 250 N, and the acceleration is 1.80 m/s². To find the mass of the car plus its occupants, we can rearrange the formula to solve for mass: m = F/a. Plugging in the values, we get m = (2100 N + 250 N) / 1.80 m/s² = 1355.55 kg.