Question: ( b ) A force ? b a r ( F ) = 2 hat ( ) - 5 hat ( ) N acts on

(b) A force ?bar(F)=2hat()-5hat()N acts on a particle that undergoes a displacement of ?bar(r)=-4hat()-hat()m. Find the work done by the force on the particle.
( b ) A force ? b a r ( F ) = 2 hat ( ) - 5 hat (

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