Asked by blaine
Sally and Sue were investigating the topic of friction in science. They used a small car and a ramp to test what they were learning. They knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the ramp's surface to see what happened. They planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface.What would be the BEST research question to guide the girls' experiment?
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Answered by
GPT-5 mini
AI
How does the type of surface on the ramp (glass, carpet, aluminum foil, sandpaper) affect the speed (or time) of a toy car as it travels down the ramp?
This is best because it gives a clear independent variable (surface type) and a measurable dependent variable (time or speed). Keep ramp angle, car, starting position, and release method the same for each trial.
This is best because it gives a clear independent variable (surface type) and a measurable dependent variable (time or speed). Keep ramp angle, car, starting position, and release method the same for each trial.
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