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Question

Given Newton’s First Law of Motion, what do we reasonably expect an object to do given the following scenarios?

Part (a) An object sits at rest with no unbalanced forces or torques acting upon it. What do we expect this object to do?

The object begins to rotate with a constant angular velocity.
None of these answers.
The object will begin to rotate at an accelerating angular velocity.
The object will remain at rest.
The object will begin to move at a constant velocity.
The object will begin to move at an accelerating velocity .

Part (b) An object is traveling with a constant velocity with no unbalanced forces or torques acting upon it. What do we expect this object to do?

The object will begin to spin as it slows down.
None of these answers.
The object will remain at the same speed but change direction.
The object will remain at the same speed, traveling in the same direction.
The object will slow down and eventually come to rest.
The object will speed up.

Part (c) An object sits at rest with an unbalanced force acting upon it. What should we not expect this object to do? Asking another way, which of the following choices could not be an outcome?

The object will begin to move with an accelerating velocity.
None of these answers.
The object will begin to move with a constant velocity and spin.
The object will remain at rest.
The object will begin to spin.
The object will begin to move with a cons

Technobuff · Accepted Answer

a) The object will remain at rest. 
b) The object will remain at the same speed, traveling in the same direction. 
c) The object will begin to move with an accelerating velocity, so one would not expect any of the others to happen.
But this is PROVIDED the unbalanced force is greater than the static friction before it moves, or it would remain at rest, and so one would not expect any of the others to happen.

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