to overcome an objects inertia, it must be acted upon by __________. a. gravity b. energy c. force d…

Brief Explanations:

According to Newton's first - law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. To change an object's state of motion (overcome its inertia), a force must be applied. Gravity is a type of force but not the only one to overcome inertia. Energy is the ability to do work and not what directly acts to overcome inertia. Acceleration is the result of a force acting on an object, not what acts to overcome inertia.

Answer:

C. force