Why work done is a scalar?
2006-12-23 18:45:22 · 2 個解答 · 發問者 Wong 2 in 科學 ➔ 其他：科學
plz answer the question in ce level .
2006-12-23 19:18:35 · update #1
Work done is equivalent to energy, which is a scalar quantity.
Since all forms of energy are interchangeable (law of conservation of energy), you wouldn't have the physical situations like amount of heat in a certain direction, or the amount of electrical energy spent in a month in the vertical or horizontal direction etc.
2006-12-23 20:28:14 · answer #1 · answered by 天同 7 · 0⤊ 0⤋
Yes!
Mechanical work is a force applied through a distance, defined mathematically as the line integral of a scalar product of force and displacement vectors.
http://www.answers.com/topic/mechanical-work
2006-12-23 19:03:51 · answer #2 · answered by peterlau621 7 · 0⤊ 0⤋