Which of the following reference points would allow you to observe the speed of a car that you are traveling in?
To observe the speed of a car that you are traveling in, you need a reference point that is external to the car. The following reference points would allow you to do so:
1. Landmarks: Look for stationary objects on the side of the road, such as buildings, trees, or signs. As the car moves, observe how quickly these landmarks pass by. The faster they pass, the higher the speed of the car.
2. Other vehicles: If there are other vehicles on the road traveling at a known speed, observe the rate at which your car overtakes or falls behind them. This comparison can give you an idea of your car's speed.
3. Speedometer: Most cars have a built-in speedometer that indicates the speed at which the vehicle is traveling. This instrument measures the rotational speed of the car's wheels or the transmission output shaft and converts it into a speed reading.
Using any of these reference points, you can observe and determine the speed of the car you are traveling in.