If positive work is done on an object the object

Asked by admin @ 30/11/2021 in Physics viewed by 284 People

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.

Answered by admin @ 30/11/2021

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.

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