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
Students are investigating energy transfer in the laboratory. The students use rubber bands and rulers for their investigation. They attach a rubber band to each ruler, pull the band back, and allow the band to launch from the ruler. The diagram shows their set up. The results of their investigation are shown. Ruler Distance Band Is Pulled Back (centimeters) Distance Band Travels (centimeters) 1 5 61 2 10 122 3 15 213 4 20 366 Which statement best describes the results of their investigation? A. The more potential energy the band has, the more kinetic energy is transferred, and the farther the band travels. B. The less potential energy the band has, the more kinetic energy is transferred, and the farther the band travels. C. The more kinetic energy the band has, the more potential energy is transferred, and the farther the band travels. D. The less kinetic energy the band has, the more potential energy is transferred, and the farther the band travels.
A. The more potential energy the band has, the more kinetic energy is transferred, and the farther the band travels.
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 varying the starting height, Peggy can determine the minimum height required for each car to successfully complete the loop. This will help her identify the starting position that works for all the cars consistently.
To determine the starting position that allows every car to complete the loop in Peggy's new racetrack, she can conduct different experiments.
A. 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 experiment involves varying the starting heights of the cars and noting which heights result in all three cars successfully completing the loop every time. By conducting multiple trials, Peggy can identify the starting height that consistently allows all three cars to complete the loop.
B. 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.
In this experiment, Peggy keeps the starting height constant for all three cars and measures the time it takes for each car to complete the loop. By comparing the times for each car, Peggy can identify if there is a specific starting height that allows every car to complete the loop more quickly.
C. 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.
This experiment involves dropping each car from various starting heights and measuring the distance each car travels after completing the loop. Peggy can analyze the data to determine if certain starting heights result in each car covering a greater distance after the loop.
D. Experiment where Peggy drops each car from the same starting height and records which cars complete the loop from that height.
In this experiment, Peggy chooses a single starting height and observes which cars successfully complete the loop from that height. This experiment helps identify if there is one specific starting height that allows every car to complete the loop.
Based on the objective of finding the starting position that allows every car to complete the loop, option A is the most suitable experiment. By dropping each car from different starting heights multiple times and recording when all three cars complete the loop every time, Peggy can determine the starting position that is suitable for all the cars.