Alexis and Morgan, two college students are talking about the motion of the arrow-block system at the instant it swings to max height h. The two college students make the following statements: Alexis' Statement: The speed of the system at height his omis. Also, because its motion is circular, and the equation for centripetal acceleration is a =vir the acceleration is also zero Morgan's Statement: The acceleration of the system at heighth can't be zero, or the arrow and block system would not swing back down. The acceleration must be equal to g at height h. Analysis of Alexis' Statement: (c) Which underlined phrase or phrases, if either, are correct about Alexi's statement? If neither phrase is correct, write "none." (1 point) (d) Which underlined phrase or phrases, if either, are incorrect about Alexi's statement? If neither phrase is incorrect, write "none." (1 point) Analysis of Morgan's Statement: (e) Which underlined phrase or phrases, if either, are correct about Morgan's statement? If neither phrase is correct, write "none." (1 point) ( Which underlined phrase or phrases, if either, are incorrect about Morgan's statement? If neither phrase is incorrect, write "none." (1 point)
11 answers