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.

Question

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 help Peggy choose the starting position that allows every car to complete the loop, the best experiment 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 Peggy to determine the minimum height needed for each car to successfully complete the loop. By testing different heights, she can find the optimal starting position that ensures all three cars (the sports car, truck, and jeep) can complete the loop. This experiment directly addresses the requirement of finding a height that works for every car, making it the most comprehensive and effective choice.