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4. Golden Experience (10 points) Allan and Bob are in an exhibition show. Allan is on the ground yAJI = 0 {In}, and Bob is

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4. Golden Experience (10 points) Allan and Bob are in an exhibition show. Allan is on the ground yAJI = 0 {In}, and Bob is directly above him at HS.\" = 1'72. [m]. In their exhibit, Bob drops a cannonball at the same time Allan shoots a similar cannonball directly upward. Allan's cannonball was launched with enough speed so that both cannonballs will collide just as Allan's cannonball reached its maximum height. A. (3 points) What is the initial speed of Allan's cannonball? B. How long after launch did it take for both cannonballs collide? C. At what height do both cannonballs collide? D. After collision, both cannonballs got stuckltoeether and moved directly downward with an initial speed of 110 = '2' #33134). How long after collision will it take for both balls to reach the ground

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