Question

define 1 Joule of work?when is the work done said to negative
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Answer 1

Explanation:

Joule is the SI unit of work. 1 Joule is amount of work done when a force of 1 Newton displaces a body through a distance of 1m in the direction of the force applied.

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Answer 2

Answer:

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Define 1 Joule of work.

1 Joule is amount of work done when a force of 1 Newton displaces a body through a distance of 1m in the direction of the force applied. Joule is the SI unit of work.

When is the work done said to negative?

The work done is said to be negative work when force and displacement are in opposite direction. Example: When an object is thrown upwards,the force of gravity is in downward direction whereas displacement acts in upward direction.