Unformatted text preview: m/s south) Problem 11 Two objects are traveling around different circular orbits, each with a constant speed. They both have the same acceleration but object A is traveling twice as fast as object B. The radius for object A's orbit is how many times that of the radius for object B's? PHY 2048 Spring 2014 – Acosta, Rinzler Exam 1 solutions (1) 4 (2) 2 (3) 1 (4) ½ (5) ¼ Centripetal acceleration is given by: 2
v 2 v 2 v 2 ( 2 vB )
aC = = A = B = r rA rB
rA ⇒ rA = 4 rB Problem 12 A ferry boat is sailing at 12 km/h 30° W of N with respect to a wide river that is flowing at 6.0 km/h E. As observed from the shore, the ferry boat is sailing: (1) due N (2) 30° W of N (3) 45° E of N (4) 30° E of N (5) none of these...
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 Spring '14
 Physics, Acceleration, Velocity

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