If you exert a force on an object in motion, then depending on the direction of the force you exert and the direction in which it's already moving, you may speed it up, slow it down, or change the direction of its motion. Any of these changes is called an acceleration.
In addition to that, you'll change the object's momentum and kinetic energy. They may increase or decrease ... again depending on the directions of the motion and the new force.
You will not change the object's mass, inertia, weight, color, cost, political affiliation, or gender preference.
