English, 12.11.2020 16:30 jasmineeeee449292
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?
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Your school is considering adopting a policy that requires all students to complete 100 hours of community service during there high school careers in order to graduate. the district asked for student input at the next school board meeting as to whether or not they should adopt this policy. research the topic, decide whether you are in favor of or against the new policy, and write a five-paragraph persuasive speech that you will deliver to the school board members and your principle need answer for my
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Gravity and drag both reduce the maximum altitude that a rocket can reach, increasing the cost of ro...
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