If the net work done on an object is positive, what can you conclude about the object's motion?
- the object is moving with a constant velocity.
- the object is speeding up.
- the object is slowing down.
- the object is at rest; its position is constant.
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Ответ:
Since there is a positive work on an object, this directly indicates that there is an increase in Energy on the body.
Work can be expressed in terms of Force and distance as
W = Fd
Where,
F = Force
d = Distance
The force in turn is a description of how mass accelerates according to Newton's second law, that is
F = ma
The mass (m) remains constant, but the acceleration (a) is constant, which implies directly that there is a gradual change in the velocity of the object.
Therefore the correct answer is: The object is speeding up.
Ответ:
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Explanation:
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