dest6792 dest6792

09-09-2022
Biology

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Mary does an experiment to see if the surface a model car is on affects how fast it rolls down a ramp. She use the
same car for each ramp and makes sure each ramp is inclined (tilted) the same way. First she rolls the car on a
glass ramp and times it, then she rolls it on rubber ramp and times it, and finally on a wood ramp and times It.
After rolling the cars one time on each ramp she determined that the car rolls the fastest on the rubber ramp. How
could Mary have gotten better results and validated her experiment?

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