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 every car to complete the loop, Peggy needs to assess if each car can successfully navigate the loop from various heights. The best experiment to achieve this goal is:

**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 option directly addresses the need to find the specific heights that enable all three cars to successfully complete the loop, providing comprehensive data on which starting heights are effective.