1) What relationship exists between the radius of a circle and the centripetal acceleration? (a) direct, (b) inverse, (c) exponential, (d) inverse squared. 2) Which of the following units is used for tangential velocity? (a) m/s², (b) N, (c) J, (d) m/s. 3) A toy plane of mass 1 kg flies at a speed of 0.5 m/s in circle of radius 1 m. What is the centripetal force acting on the plane? (a) 0.5 N, (b) 5 N, (c) 0.25 N, (d) 1 N, (e) 2.5 N 4) An object moves in a circle at a constant speed. Which of the following is NOT true of the object? (a) its centripetal acceleration points toward the center of the circle, (b) its velocity is constant, (c) its tangential speed is constant, (d) a centripetal force acts on the object. 5) A toy plane is moving in a circle of radius 10 m. If the radius is changed to 5 m, the centripetal force will be ______(a) increased, (b) the same, (c) decreased, (d) zero.
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Step 1: The relationship between the radius of a circle and centripetal acceleration is inverse (b). Show more…
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