17.2 - Slip Drag and Lift
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Practice Questions
Test your understanding with targeted questions
Define drag force in your own words.
💡 Hint: Think about what happens when you stick your hand out of a moving car window.
What does the coefficient of drag (Cd) describe?
💡 Hint: This coefficient varies from one shape to another.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the coefficient of drag (Cd) depend on?
💡 Hint: Consider how different objects experience varying resistance.
True or False: Lift force always acts in the same direction as the flow.
💡 Hint: Remember how airplane wings generate lift.
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Challenge Problems
Push your limits with advanced challenges
A car with a frontal area of 3 m² and a drag coefficient of 0.3 is traveling at 30 m/s. Calculate the drag force acting on the car.
💡 Hint: Make sure to convert your units appropriately.
If a cyclist can reduce their Cd from 0.9 to 0.6 by changing positions, quantify the potential speed increase if power output remains constant.
💡 Hint: Consider the relationship between power, velocity, and drag.
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