Q:

"Seat belts save lives" is not just a safety catch phrase but the law to wear seat belts in a moving car. Why would Newton say that we wear seat belts?A) An object in motion tends to stay in motion unless acting upon by an external force. B) The idiom that every action has an equal and opposite reaction applies to this case. C) The acceleration and mass of the object are directly proportional to the force applied. D) Driver mass and inertia accelerate with the stopping force due to the unbalanced forces.

Accepted Solution

A:
A) An object in motion stays in motion unless action upon an external force. Even if the car stops, you still move forward, which can lead to injury or death.