Question

The simulation kept track of the variables and automatically recorded data on object displacement, velocity, and momentum. If the trials were run on a real track with real gliders, using stopwatches and meter sticks for measurement, how might the data compare? Check all that apply.

There would be variables that would be hard to control, leading to less reliable data.
The data would be just as valid if it were recorded with a stopwatch.
Meter sticks may lack precision or may be read incorrectly.
Real glider data may vary since real collisions may involve loss of energy.
Human error in recording or plotting the data could be a factor.
Controlling real glider velocities by hand would be just as accurate as simulation controls.

Answer 1

Select:
- There would be variables that would be hard to control, leading to less reliable data. — Yes. Real experiments introduce friction, air resistance, imperfect alignments, variable releases, etc.
- Meter sticks may lack precision or may be read incorrectly. — Yes. Limited resolution and parallax/reading errors reduce spatial accuracy.
- Real glider data may vary since real collisions may involve loss of energy. — Yes. Collisions are not perfectly elastic; energy can be dissipated as heat, sound, or deformation.
- Human error in recording or plotting the data could be a factor. — Yes. Timing, reading, transcribing, and plotting all introduce additional random and systematic errors.

Do not select:
- The data would be just as valid if it were recorded with a stopwatch. — Not generally true; stopwatches introduce human reaction-time error and lower precision compared with automated recording.
- Controlling real glider velocities by hand would be just as accurate as simulation controls. — Not true; manual control is less repeatable and less precise than simulated parameter control.