Chemistry, 18.10.2019 03:50, Batzs3rdacct

Manuel wants to determine how fast a toy car will move across different surfaces. he lines 3 ramps with different surface covers including wax paper, sandpaper, and smooth carpet and runs the same car down each ramp to determine how long it takes for the car to reach the bottom. what is manuel's independent variable in this experiment

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Manuel wants to determine how fast a toy car will move across different surfaces. he lines 3 ramps w...