a)define one joule of work.
b)write an expression for the work done when a force is acting an object in the direction of the displacement.
c) write the conservation of momentum?derive an expression for it.
answer these all question.
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a) 1 J is the amount of work done by a force of 1 N on an object that displaces it through a distance of 1 m in the direction of the applied force.
c) Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant. .
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