Which sentence describes Newton’s first law? A. Larger net forces are required to accelerate objects that have more mass.

B. The action force applied by one object to another is equal in magnitude to the reaction force.

C. When the forces on an object are balanced, the object does not move

D. Two forces are unbalanced if they are unequal or they are not acting in opposite directions.

D. Two forces are unbalanced if they are unequal or they are not acting in opposite directions.

Explanation:

Here this statement is best represented by the statement : Unbalanced forces cause an object to move. An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

d) physical means can be used to separate the components of air.

e/c, where e is its total energy