Inertia

I Chose to use this video as an example of Newton's first law, because I feel it is a very relevant and serious real world example of inertia. The part of this video that really reviled new information and challenged the way that I saw and understood the role inertia in a car accident, begins at 50 seconds and explains what the purpose of head rest are.  The typical though on what causes whiplash in a car crash is that the neck violently snaps backwards.  While what is really happening is a gruesome example of Newton's first law which states that an object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an outside force.   And what this video reviles to us is that the whiplash is not caused by the head moving away from the body, but instead is caused by the body moving away from the head.