Question

question: The picture below shows Peggy's new racetrack. It has different starting positions and an upside-down loop for cars to go through. She has 3 cars that she wants to try on the track: a sports car, a truck, and a jeep. Peggy knows that height can change how fast a car will go. Which experiment will help Peggy choose the starting position that allows every car to complete the loop? A. an experiment where Peggy drops each car from different starting heights multiple times and records which heights allow all three cars to complete the loop every time B. an experiment where Peggy drops each car from the same starting height and measures the amount of time it takes each car to complete the loop C. an experiment where Peggy drops each car from different starting heights multiple times and measures how far each car goes on the course after completing the loop D. an experiment where Peggy drops each car from the same starting height and records which cars complete the loop from that height

Answer 1

To determine which starting position allows each car to complete the loop reliably, Peggy needs to assess the effectiveness of various heights on the performance of each car.

The best experiment for this purpose would be A: an experiment where Peggy drops each car from different starting heights multiple times and records which heights allow all three cars to complete the loop every time. This approach allows her to identify the specific heights that are effective for each vehicle, ensuring that the results are consistent and providing the necessary information to determine the best starting position for all cars.

Options B, C, and D either do not involve testing multiple heights or do not sufficiently assess the ability of each car to consistently complete the loop.