In a scientific argument about the fastest roller coaster design, what is the most critical piece of evidence to include?

The opinions of classmates about which design looked best.

The materials used to construct the roller coaster car.

Recorded measurements of speed for different launcher settings.

A detailed drawing of the final roller coaster design without any performance data.

In the structure of a scientific argument (Claim, Evidence, Reasoning), what is the main purpose of the 'Reasoning' section?

To state the final conclusion of the experiment as a simple, one-sentence answer.

To list all the raw data, tables, and measurements collected during the investigation.

To describe the step-by-step procedure of how the experiment was conducted.

To explain the scientific principles that show how the evidence supports the claim.

The coaster's mass should be increased to store more energy.

The distance from the launcher should be increased to reduce force.

The initial launch force should be maximized to increase potential energy.

The track should be made longer to allow the coaster to build up more speed.

A stronger force makes the car lighter, allowing it to accelerate more easily.

The car's final speed is determined by its mass, not the initial force.

A stronger force increases the stored potential energy, which becomes kinetic energy.

The friction on the track is reduced by a stronger launch, making the car go faster.

Roller coasters are fun and exciting rides.

The design with the closest launcher distance is the fastest.

Building roller coasters requires careful measurement.

More experiments are needed to find out which design is best.