Your family decides to take a long trip for the summer. You will be riding in the car while it moves at a fairly constant rate (about the same speed). The longer you are in the car, the further you travel on your trip. What is the independent variable and why

The independent variable is the amount of time spent in the car. This is because it is the variable that is being manipulated or changed by the family. They may decide to spend more or less time in the car, and this will directly affect the distance they travel on the trip.