Question

An object that is at rest will begin to move if which of the following is true?

The surface on which it rests is frictionless.


The mass of the object is sufficient.


Gravity on the object can be reduced.


Unbalanced forces act on the object.

Answer 1

the object will begin to move when unbalanced forces act on it

Step-by-step explanation:

Newton's first law of motion states that 'a body or an object will continue to be in its state of rest until it's acted upon by an external force'

Answer 2

D. Unbalanced forces act on the object

Step-by-step explanation:

Newton's First Law of Motion states that an object at rest will remain at rest unless acted on by an outside force.