Final answer:
To find the mass of the car, use Newton's second law of motion, m = F/a, with a force of 10,500 Newtons and acceleration of 2 m/s², yielding a mass of 5,250 kg.
Step-by-step explanation:
The mass of a car being pulled with a force can be determined using Newton's second law of motion, which states that force equals mass times acceleration (F = ma). To find the mass (m) of the car, we can rearrange the equation to m = F/a, where F is the force applied to the car, and a is the acceleration of the car.
Using the given values, the force (F) is 10,500 Newtons, and the acceleration (a) is 2 m/s². Thus, the mass of the car can be calculated as follows:
m = F/a = 10,500 N / 2 m/s² = 5,250 kg.
Therefore, the correct answer is A. 5,250 kg.