Question

1. which situation best represents a closed environment? (1 point)

two balls colliding in midair
two balls colliding under water
two balls colliding on a pool table
two balls colliding in deep space

Explanation:

A closed environment is one where there is no external influence or interaction. In midair, there is air resistance (external force). Under water, water resistance (external force). On a pool table, friction (external force). In deep space, there is negligible external influence.

Answer:

two balls colliding in deep space