clicker17_09 - slows with an angular acceleration of...

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1 A coin with a diameter of 2.40 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 18.0 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude 1.90 rad/s 2 , how far does the coin roll before coming to rest? Which equation should we use? A. ω = ω i + α t B. ∆θ = ω i + (1/2) α t 2 C. ω 2 = ω i 2 + 2 α∆θ A coin with a diameter of 2.40 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 18.0 rad/s and rolls in a straight line without slipping. If the rotation
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Unformatted text preview: slows with an angular acceleration of magnitude 1.90 rad/s 2 , how far does the coin roll before coming to rest? What is the distance traveled by the coin? A. 1.02 m B. 4.08 m C. 2.04 m D. 0.51 m Quiz 3 Which figure shows the correct direction of the centripetal acceleration (fat arrow)? A. Figure 1 B. Figure 2 C. Figure 3 D. Figure 4 Figure 1 Figure 2 Figure 3 Figure 4 Quiz 4 Which way would the friction point if the car were going slower than v? A. Figure 1 B. Figure 2 C. Figure 3 D. Figure 4 Figure 1 Figure 2 Figure 3 Figure 4...
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