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Work done may be positive or negative.

Negative work - when force and displacement are in opposite direction.

Positive work - when F and S are in the same direction

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Energy can neither be created nor be destroyed.
One form of energy can be converted into another form.

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Rate of doing work

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Capacity to do a work

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W = F . S
where,
F = force, N
S = displacement, m

# data[].attributes.body
1. Work

2. Energy

3. Rate of doing work