Physics
10.12.2021 11:16
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What does it mean when work is positive?
What does it mean when work is positive?
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yourmumsanoodle
4,8(42 marks)
Both positive work and negative work have meaning: Positive work follows when the force has a component parallel to the displacement. Positive work adds energy to a system. Negative work follows when the force has a component opposite or against the displacement.
kayla114035
5,0(55 marks)
3200J / 3.2KJ
Explanation:
The total energy = mgh
That is mass x acceleration due to gravity x height .
Where mass = 8kg
g = 10m/s²
h = 40m since it falls 40m
Therefore energy = mgh
= 8 × 10 × 40
= 80 × 40
= 3200J / 3.2KJ
I hope this was helpful, please rate as brainliest
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