Real Life Examples of Newton's Laws

Audrey DeJong

Law 1

The Law of Inertia

Newton's first law states that "an object at rest will stay at rest and an object in motion stays in motion until an unbalanced force acts on it". Inertia is the force that every object has. The more mass an object has the more Inertia it has. This law also states that something cannot slow down or move unless it has an unbalanced force acting on it. Thus it explains that any movement in the world is because of unbalanced forces.

Example

Have you ever noticed when you are at an intersection, the light turns green, and your car accelerates, you lean backwards? This is because your mass wants to stay back at the intersection, while your car accelerates.

Law 2

Law 2 states...

That "Acceleration is produced when a force acts on a mass." This is shown by the famous formula F=m*a. This basically means that the greater mass something has the more acceleration and force it will have.

Example

If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass. It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one.

Law 3

Law 3 states...

"For every action there is an equal and opposite reaction." This basically means that things will not move when you touch them. When you lean on a wall, when you stand up, when you sit down, etc. Another way to explain it is when an object pushes another object it gets pushed back in the opposite direction equally hard.

Example

One example of Newton's 3rd law is a rocket taking off. The rocket's action is to push down on the ground with the force of its powerful engines, and the reaction is that the ground pushes the rocket upwards with an equal force.