What is the amount of work done when a body moves under a force of 1 N a distance of 1 metre in the direction of the force?
1 Joule
Work done when a force acts along the direction of motion is
\(W = F \times d = 1\ \text{N} \times 1\ \text{m} = 1\ \text{J}\)
Hence the work done is 1 joule. By definition, one joule is exactly the work done by a force of one newton acting through a distance of one metre in its own direction.
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