which of the following is a piagetian term for understanding that objects and events continue to exist even when they cannot directly be seen, heard , or touched

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. 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.

explanation:

3. dark matter

empty space could also be a simple vacuum