The correct answer to this question is a car driving down a ill because the car is bigger (mass) and faster (speed). It has a bigger mass and a faster speed. So A is the correct answer for this question.
Explanation: Since the car has a engine it can accelerate in speed so we know that its already faster than all of the other options A car also has greater mass than the other options It can also be a ball because of its light mass it will roll down hill very easily and fast.
