Question

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read the abstract and then answer the question. gravity and drag both reduce the maximum altitude that a rocket can reach, increasing the cost of rocket flights. this study hypothesizes that rockets with a smoother surface will experience less drag and reach higher altitudes, given the same thrust as rockets with rough surfaces. to test this hypothesis, three identical model rockets were constructed and given finishes with varying degrees of surface smoothness: roughed with 40 - grit sandpaper, unfinished, and glossed. each rocket was outfitted with b5 - 4 motors and flown ten times. flight results support the initial hypothesis, with the roughened - surface rocket reaching the apogee point at the lowest altitude and the glossed - surface rocket reaching it at the highest. in conclusion, the findings suggest that smoother surface finishes can reduce the drag force enough to affect altitude, thereby potentially increasing rocket efficiency and reducing fuel costs. who is the primary audience? high school math students academics in the field of engineering people concerned about the price of gas model rocket hobbyists

Explanation:

The abstract discusses a technical study on how surface smoothness affects rocket altitude and efficiency, which is a topic of interest in engineering. High - school math students are not the primary focus as it's not a basic math topic. People concerned about gas price are more related to automotive or general fuel costs, not rocket - specific efficiency. Model rocket hobbyists might be interested but the academic and engineering - related nature of the study makes academics in engineering the primary audience.

Answer:

academics in the field of engineering