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Physics, 08.07.2019 04:30 antcobra

Agroup of students is investigating whether the smoothness of surface affects the force of friction. each student pushes a book on two different surfaces. one surface is ice and the other is concrete. the distance traveled by the book on each surface is shown. experimental observations student 1 student 2 student 3 student 4 distance traveled by book on ice 23 cm 21 cm 24 cm 22 cm distance traveled by book on concrete 15 cm 18 cm 16 cm 17 cm based on the table, which conclusion is correct about the average distance traveled?

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