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
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.
The experiment that will help Peggy choose the starting position that allows every car to complete the loop is option 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. By dropping each car from different starting heights multiple times, Peggy can observe which heights allow all three cars to successfully complete the loop consistently. This will help determine the starting position that works for every car.
The experiment that will help Peggy choose the starting position that allows every car to complete the loop is option A.
To understand why option A is the correct choice, let's break down each option:
A. In this experiment, Peggy will drop each car from different starting heights multiple times and record which heights allow all three cars to complete the loop every time. This will help her identify the starting position that provides enough height for all the cars to complete the loop successfully.
B. In this experiment, Peggy would drop each car from the same starting height and measure the amount of time it takes each car to complete the loop. While this information can tell Peggy about the speed of each car, it does not guarantee that all three cars will be able to complete the loop from that particular starting position.
C. In this experiment, Peggy would drop each car from different starting heights multiple times and measure how far each car goes on the course after completing the loop. While this information might provide insights into the distance covered by each car, it doesn't necessarily indicate whether the cars are able to successfully complete the loop.
D. In this experiment, Peggy would drop each car from the same starting height and record which cars complete the loop from that height. While this might identify which cars are able to complete the loop, it does not provide information about the best starting position that allows all three cars to complete the loop successfully.
Therefore, option A is the most suitable experiment because it allows Peggy to systematically test various starting heights for each car and determine the optimal starting position for all three cars to complete the loop reliably.