Question

1. newton’s first law of motion states that \an object at rest will stay at rest, and an object in motion will stay in motion unless acted on by ________.\

a. an outside force
b. a comet
c. a collision
d. an inside force

Explanation:

Newton's first law of motion (also known as the law of inertia) states that an object at rest remains at rest, and an object in motion remains in motion with a constant velocity, unless acted upon by a net external force. A comet (option B) is a celestial object and not related to the law's requirement. A collision (option C) is a type of interaction, but the law refers to a force (specifically an outside/net external force). An inside force (option D) is incorrect as the law pertains to external forces that can change the object's state of motion. So the correct option is A.

Answer:

A. an outside force