Question

the passage below describes an experiment. read the passage and then follow the instructions below. kimberly applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. then, she removed the wax and rode the snowboard straight down the hill again. she repeated the rides four more times, alternating whether she rode with a thin layer of wax on the board or not. her friend tom timed each ride. kimberly and tom calculated the average time it took to slide straight down the hill on the snowboard with wax compared to the average time on the snowboard without wax. identify the question that kimberly and toms experiment can best answer. does kimberlys snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax? does kimberlys snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?

Explanation:

Kimberly and Tom compared the average time of snow - boarding down a hill with and without a thin layer of wax. They did not vary the thickness of the wax. So, the experiment is designed to answer the question about the presence or absence of wax, not the thickness.

Answer:

Does Kimberly's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?