Final answer:
The independent variable is the distance it takes for each car to stop, and the dependent variable is the speed at which the cars accelerate to 60 mph.
Step-by-step explanation:
The independent variable in this scenario is the distance it takes for each car to stop. The dependent variable is the speed at which the cars accelerate to 60 mph. The distance required to stop depends on factors such as the initial speed of the car, the deceleration rate, and the road conditions.
For example, if Car A and Car B both accelerate to 60 mph and then slam on the brakes, the independent variable would be the distance it takes for each car to stop. Car A might take a longer distance to stop than Car B due to factors such as the weight of the car or the condition of the brakes.
In this experiment, you would measure the stopping distance of each car and record the results. The independent variable (stopping distance) can be manipulated by changing factors such as the initial speed of the car or the braking force applied.