Essay On Law Of Inertia

The law of inertia

An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

What does this mean?

This means that there is a natural tendency of objects to keep on doing what they 're doing. All objects resist changes in their state of motion. In the absence of an unbalanced force, an object in motion will maintain this state of motion.

Second law

Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object)

What does this mean?

Everyone unconsiously knows the Second Law. Everyone knows that heavier objects require more force to move the same distance as lighter objects.

However, the Second Law gives us an exact relationship

Newton’s laws (when relating to car safety) are key, in order to understand and explain how and why the safety features in a mobile vehicle, are able to function properly. For example when relating to the seatbelt safety feature, newton’s law of inertia, is able to explain why we should wear a seatbelt when driving, cause when a car is at motion(moving forward) you as an driver or a passenger will move at motion with the vehicle. When the vehicle starts to decelerate you will decelerate with the car. If for example you hit a wall at a decent speed and are not wearing your seatbelt, the vehicle will stop because of the external force of the wall, you of course, will remain at the motion due to, not being restrained by the seatbelt (external force acting on your body)and will remain to move forward probably going through the windshield until stopped or slowed down object in front of you.(this also applies to the airbag safety feature, which acts as the force against your body, when stopping you from hitting your head on the dash, once the car stopes, due to a crash(hitting an external