A metal ball of N weighs 16.5 N is dropped from an airplane and within two minut

Question

A metal ball of N weighs 16.5 N is dropped from an airplane and within two minutes reaches its the terminal velocity, At the terminal velocity, what is its acceleration" At the terminal velocity, what is the value of the air resistance force? (magnitude and direction) Concept 38: Aerodynamics: Design of shapes of cars and planes Aerodynamics is the study of the flow of ____ as it passes over and around a _____ object. Aerodynamics also studies the _______ which the air exerts on the object When we say a car is aerodynamic, we mean that its shape is good for going through air with low resistance (drag) Which of the following are benefits of an aerodynamic car shape? (For each one, say true or false.) Less force will be required to keep the car moving The car will need a lot of power to move at a low speeds The car will be able to achieve a higher terminal velocity The car will be more fuel efficient When a Formula 1 car moves fast, the forces exerted by the air on the car are used to push the car down (called downforce). Why is this a good thing? What do we call the study of the flow of air as it passes over and around a moving object? (select one correct answer) Air conditioning Aeronomics Aerodynamics

Explanation / Answer

82 i) zero

ii)165N

83) Air;moving

84)a) True

b)False

c) True

d)True

85) The downforce allows the car to travel faster around corners or sharp turnd because it increases vertical force on the tyres and hence higher grip is obtained by the tyres

86)Aerodynamics

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