Answer the following question: Choose between "cement driveway" and "grassy hill". Question: Ralph let the rubber ball roll downhill on the cement driveway then retrieved it and let it roll downhill on the grassy hill. He noted the ball rolled faster and went a longer distances on the cement driveway then on the grassy hill. He surmised that there was less friction on the (A) cement driveway (B) grassy hill.
Answer:
cement driveway