Newton's law of inertia describes how an object in motion will stay in motion unless acted upon by an outside force. The concept of inertia is responsible for injuries during collisions. Which of these apparatus is installed or used to directly reduce the impacts due to inertia? Select ALL that apply.

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

Where do magnetic lines of force enter earth?

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.