If you are driving/riding in a car at 40 mph, you are moving along with the car at 40mph also. Due to inertia, you will continue to move at 40 mph unless another force acts upon you, such as your seat belt. Say the car stops moving- you won't due to inertia, but the seat belt will stop you because it is another force.
Inertia is the resistance of a mass to undergo changes in velocity/momentum. In other words, a mass tends to stay at its existing velocity (and momentum) until acted upon by an outside force (which will accelerate or decelerate the mass to change its velocity/momentum).
One excellent example of inertia is the reaction of the body to quick acceleration or braking in a car. When you accelerate, your body tends to press back against the seat, because the car is accelerating forward, and the inertia of your body tries to remain at its previous velocity. As soon as the force of the car pushing forward against you accelerates you, you match the velocity of the car, and you feel no further acceleration (you feel like you are at rest inside the car).
When you press the brake pedal, the car decelerates quickly, and your body's inertia makes you tend to continue moving forward at your previous velocity, making your body move forward.
Seat belts were created to resist this effect, pulling back against you, as they are attached to the car, so that there is a force pressing back against to decelerate you to match the car's velocity.
Otherwise, if your inertial velocity were high enough, and the deceleration fast enough, you wouldn't have the muscular strength to force yourself backward, and your body would continue to move forward, perhaps causing injury as you impact with the dashboard or fly out the windshield.
Another name for Newton's first law is "the law of inertia."
The law of inertia applies to all physical objects.
Newton's first law is sometimes called the law of inertia.
Newton's first law of motion is also known as law of inertia.
It is sometimes referred to as the law of inertia.
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Yes it does.
yes
Another name for Newton's first law is "the law of inertia."
The law of inertia applies to all physical objects.
the Law of Inertia state
Newton's first law is sometimes called the law of inertia.
It applies to both moving and non-moving objects.
Law of inertia.
Newton's first law of motion is also known as law of inertia.
Inertia is the tendancy of an object to stay in rest or in motion. Newtons 1st law was the law of inertia.
Because that is how inertia is defined!