An object is moving with a constant positive velocity along positive x-axis. Which of the following statement is true?Group of answer choicesnet force on the object is non-zero in the negative direction of xthe object must be moving on a frictionless surfacethe net force on the object is zerothe net force must be equal to the normal force on the objectnet force on the object must be non-zero in the positive direction of x
Question
An object is moving with a constant positive velocity along positive x-axis. Which of the following statement is true?Group of answer choicesnet force on the object is non-zero in the negative direction of xthe object must be moving on a frictionless surfacethe net force on the object is zerothe net force must be equal to the normal force on the objectnet force on the object must be non-zero in the positive direction of x
Solution
The correct statement is: "the net force on the object is zero."
Here's why:
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If an object is moving with a constant velocity, it means there is no acceleration. According to Newton's second law (F=ma), if acceleration (a) is zero, then the net force (F) must also be zero.
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The direction of the force does not matter in this case because the velocity is constant. Therefore, the statements about the net force being non-zero in either the positive or negative direction of x are incorrect.
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The statement about the object moving on a frictionless surface could be true in some cases, but it's not necessarily always true. Even if there is friction, as long as the force pushing the object equals the force of
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