PARBOABOA – Newton’s laws are one of the physics learning materials that discusses the nature of the motion of objects.
This theory was coined by an English scientist named Sir Isaac Newton. There are three types of Newton’s Laws, namely Newton’s 1st Law, Newton’s 2nd Law, and Newton’s 3rd Law.
On this occasion, we will discuss the sound of Newton’s First Law, complete with formulas and example questions.
In general, Newton’s First Law will tend to maintain its original condition with the same humidity properties or inertia levels.
That is the reason why Newton’s First Law is also known as the Law of Humidity. To understand it better, see the complete review below!
Newton’s 1st Law
Hukum Newton I (Photo: Parker/June)
In simple terms, the meaning of Newton’s 1st Law is a law which explains that an object will remain at rest if it is initially at rest, or will continue to move at a constant speed in a straight line if it is initially moving.
This happens because objects have a property called inertia, which makes them reluctant to change their own state.
Reported from the page umsu.ac.idNewton’s First Law states that “if the total force exerted on an object is zero, then the object that was originally at rest will remain at rest.
Meanwhile, an object that was originally moving at a constant speed will continue to move in a straight path at the same speed.”
For example, if you push a basket on the floor, the basket will move until friction or other resistance stops it.
Likewise, if you want to stop a rolling ball, you must apply enough opposing force to overcome the ball’s inertia.
Newton’s first law is the basis for understanding the many physical phenomena around us.
From everyday objects to the movement of planets, the principle of inertia plays an important role in explaining why objects move or don’t move.
In its application, understanding Newton’s first law is very relevant. When driving, for example, the driver must wear a seat belt to overcome body inertia when the car suddenly stops.
Likewise, in sports, such as playing soccer, the ball will continue to roll until there is an obstacle that reduces its energy.
Newton’s 1st Law Formula
Reported from the page umsu.ac.idthe formula for Newton’s First Law (Law of Inertia) can be expressed as follows:
ΣF = 0
Where:
- ΣF is the total force acting on the object (N)
- The number “0” indicates that the total force is zero, meaning there is no net force acting on the object.
This formula reflects the concept that if the total force acting on an object is zero, then the object will remain at rest or move at a constant speed, in accordance with Newton’s First Law.
Examples of Newton’s 1st Law in Everyday Life
Hukum Newton I (Photo: Parker/June)
Reported from the page shafta.sch.idbelow are several examples of the application of Newton’s First Law in everyday life:
1. Sudden stop of the car
When you are driving and suddenly hit the brakes, your body tends to continue forward motion due to inertia.
Using a seat belt can help overcome body inertia and prevent you from being injured when the car stops suddenly.
2. Bicycle accidents
When you are riding a bicycle and suddenly stop, your body may be thrown forward due to inertia.
Using the brakes wisely and controlling speed are ways to overcome the effects of inertia.
3. Pedaling a bicycle
When you pedal a bicycle, you initially have to apply force to overcome inertia and initiate movement.
Once you reach a constant speed, the bike will still have movement energy without needing to provide extra power if there is no resistance.
4. Playing Football
When a ball is dropped or stopped while in motion, the ball will tend to continue its previous motion due to inertia or Newton’s First Law.
Obstacles such as friction or impact with a surface will reduce the energy and ultimately stop the ball.
5. Take the Elevator
When an elevator moves up or down at a constant speed, we feel that our weight is normal.
However, when the elevator moves with sharp acceleration or deceleration, we feel the difference in body weight due to the inertia of the body.
6. Pushing the Shopping Cart
When you push a shopping cart in the supermarket, the cart will continue to move until an obstacle reduces its energy. When you stop pushing, the cart will stop due to inertia.
7. Throwing Objects
When you throw an object, the object will move in a straight path until a resistance force such as gravity or air friction affects its movement.
In all the examples above, the principle of inertia from Newton’s First Law is clearly visible. Objects tend to remain at rest or move at a constant speed if there is no external force acting on them.
Example of Newton’s Law Questions 1
Quoting from the official page umsu.ac.idsome examples of Newton’s Law 1 questions are as follows:
Example question 1
A soccer player kicks the ball forward at a speed of 10 m/s. After three seconds, the ball stopped. Explain why this phenomenon agrees with Newton’s First Law.
Answer:
This phenomenon is in accordance with Newton’s First Law because objects (balls) tend to remain in a state of motion or rest unless there is an external force acting on them.
When a soccer player kicks the ball, the ball gains speed. However, after the ball is stopped, the ball’s movement tends to stop due to the friction force and air resistance force acting on it.
This illustrates the principle of inertia from Newton’s First Law where objects tend to remain in a state of motion or rest unless a force changes them.
Example question 2
A bicycle racer is traveling fast on a flat track. Then, he approached an area with a steep incline and stopped pushing the bicycle pedals.
Why does a racer still have a tendency to continue moving forward even though he is no longer pushing on the pedals, and how is this related to Newton’s First Law?
Answer:
Racers still have a tendency to continue moving forward due to the principle of inertia stated in Newton’s First Law.
When the racer stops pushing the pedals, his body retains the forward speed it previously had.
This happens because objects tend to remain in a state of motion or rest unless there is an external force acting on them.
Even though the racer is no longer applying force to the pedals, inertia keeps him moving forward before his speed eventually subsides due to the frictional force between the bicycle tires and the track surface.
This is an explanation of Newton’s 1st law, complete with formulas and example questions. Happy reading and hopefully useful.
2024-02-02 02:08:54
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