Two wooden crates with masses as shown are tied together by a horizontal cord. Another cord is

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Two wooden crates with masses as shown are tied together by a horizontal cord. Another cord is tied to the first crate, and it is pulled with a force of 195 N at an angle of 20°, as shown. Each crate has a coefficient of kinetic friction of 0.55. 

(a) Find the acceleration of the crates. 

(b) Find the tension in the rope connecting the two crates. 

(c) If the crates are initially at rest, how far do they move in the first 3.0 s?


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