Isaac Newton's findings that still hold true today are _____. Select all that apply.
A thing in motion stays in motion
Changing Britain’s currency over to the gold standard
When a force hits an object that object will eventually stop moving
The theory of gravity
For every force there is an equal and opposition force

This is the first law of motion discovered by Isaac Newton. This law postulates that a body can not change its initial state by itself, either at rest or in uniform rectilinear motion unless a force or a series of forces is applied, the result of which is not null.

The theory of gravity:

Newton postulated the theory of Gravity, which explained why objects fall to the ground, why the Moon orbits around the Earth, why the Earth and planets orbit around the Sun, and the tidal forces. This law says that massive objects attract objects with less mass in a proportion inverse to the square of the distance.

For every force there is an equal and opposition force:

This is the third Newton's law. This law states that for every action in the universe there is a reaction equal in magnitude and opposite in direction.