Images and Examples of Ist Law of Motion

Newtons First Law of Motion

Newtons Laws of Motion

Motion (physics)

List Question

Physics

What are some examples of Newtons First Law of Motion?

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36 Answers

Yashit Maheshwary

Yashit Maheshwary , Full Stack Web Developer (2017-present)

Inertia was best explained by Sir Isaac Newton in his first law of motion. Basically, the law states that an object at rest stays at rest and an object continues its state of motion until an external force acts on it.

Here are some examples:

  • Ones body movement to the side when a car makes a sharp turn.
  • Tightening of seat belts in a car when it stops quickly.
  • A ball rolling down a hill will continue to roll unless friction or another force stops it.
  • If pulled quickly, a tablecloth can be removed from underneath of dishes. The dishes have the tendency to remain still as long as the friction from the movement of the tablecloth is not too great.
  • Shaking a bottle of ketchup. When bringing the bottom down, the suddenly stopping it, inertia is what causes the ketchup to come out of the bottle.
  • If one drove a car directly into a brick wall, the car would stop because of the force exerted upon it by the wall. However, the driver requires a force to stop his body from moving, such as a seatbelt, otherwise inertia will cause his body to continue moving at the original speed until his body is acted upon by some force.
  • Hovercraft are vehicles that can be a challenge to manipulate because, unlike cars, they do not have the same level of friction, so inertia causes the Hovercraft to want to continue in its same direction without stopping or turning.
  • Abruptly stopping a cart with an object on top causes the object on top to fall off. Inertia causes this by making the object want to continue moving in the direction that it was.
  • If a stopped car is hit by a moving car from behind, the passengers inside may experience whiplash as a result of the body moving forward but the head lagging behind. The head is experiencing inertia.
  • When a car is abruptly accelerated, drivers and passengers may feel as though their bodies are moving backward. In reality, inertia is making the body want to stay in place as the car moves forward.
  • If an index card is placed on top of a glass with a penny on top of it, the index card can be quickly removed while the penny falls straight into the glass, as the penny is demonstrating inertia.
  • If you jump from a car of bus that is moving, your body is still moving in the direction of the vehicle. When your feet hit the ground, the grounds act on your feet and they stop moving. You will fall because the upper part of your body didn’t stop and you will fall in the direction you were moving.
  • When you stir coffee or tea and stop, the swirling motion continues due to inertia.

Cheers!

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In other languages

En español: ¿Cuáles son algunos ejemplos de la Primera Ley del Movimiento de Newton?
Auf Deutsch: Welche sind Beispiele für Newtons erstes Bewegungsgesetz?
In italiano: Quali sono alcuni esempi della prima legge del moto di Newton?
Dalam bahasa Indonesia: Apa saja contoh hukum pertama gerak Newton?
Em português: Quais são alguns exemplos da primeira lei do movimento de Newton?
हिन्दी में: न्यूटन के गति से प्रथम सिद्धांत (First Law of Motion) के कुछ उदाहरण क्या हैं?
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Computer drawing of a model rocket which is used to explain Newton's First Law of Motion.



Sir Isaac Newton first presented his three laws
of motion
in the “Principia Mathematica Philosophiae Naturalis”
in 1686. His first law states that every object remains at rest
or in uniform motion in a straight line unless compelled to change
its state by the action of an external force. This is normally taken
as the definition of inertia. The key point here is that if
there is no net force acting on an object
(if all the external forces cancel each other out) then the object
maintains a constant velocity.
If that velocity is zero, then the object remains at rest.
If the velocity is not zero, then the object maintains that velocity and travels
in a straight line.
If a net external force is applied, the velocity changes because of the force.

The liftoff of a rocket from the
launch pad is a good example of this principle. Just prior to
engine ignition, the velocity of the rocket is zero and the rocket is at rest.
If the rocket is sitting on its fins, the
weight
of the rocket is balanced by the re-action of the earth
to the weight as described by Newton’s
third law of motion.
There is no net force on the object, and the rocket would
remain at rest indefinitely. When the engine is ignited, the
thrust
of the
engine creates an additional force opposed to the weight.
As long as the thrust is less than the weight, the combination of the
thrust and the re-action force through the fins balance the weight and
there is no net external force. The rocket stays on the pad.
When the thrust is equal to the weight, there is no longer any re-action
force through the fins, but the net force on the rocket is still zero.
When the thrust is greater than the weight, there is a net external force
equal to the thrust minus the weight, and the rocket begins to rise.
The velocity of the rocket increases from zero to some positive value
under the acceleration produced by the net external force.

As the rocket velocity increases, it encounters air
resistance, or aerodynamic drag,
which opposes the motion.
Drag increases as the square of the
velocity. The thrust of the rocket must be
greater than the weight plus the drag for the rocket to continue
accelerating. If the thrust becomes equal to the weight plus the drag,
the rocket continues to climb at a fixed velocity, but it does not
accelerate. This flight condition is often encountered by
model rockets
because of the low thrust and high drag of their design.
Full scale rockets usually have sufficient excess thrust to
continue accelerating. Drag eventually begins to decrease because
drag depends on the air
density and density
decreases with increasing
altitude.



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Images and Examples of Ist Law of Motion

Newtons First Law of Motion

Newtons Laws of Motion

Motion (physics)

List Question

Physics

What are some examples of Newtons First Law of Motion?

Online courses you’ll actually complete in just 5 minutes a day.
Get smarter with 10-day courses delivered in easy-to-digest emails every morning. Get started for free!
Learn More at gohighbrow.com
36 Answers

Yashit Maheshwary

Yashit Maheshwary , Full Stack Web Developer (2017-present)

Inertia was best explained by Sir Isaac Newton in his first law of motion. Basically, the law states that an object at rest stays at rest and an object continues its state of motion until an external force acts on it.

Here are some examples:

  • Ones body movement to the side when a car makes a sharp turn.
  • Tightening of seat belts in a car when it stops quickly.
  • A ball rolling down a hill will continue to roll unless friction or another force stops it.
  • If pulled quickly, a tablecloth can be removed from underneath of dishes. The dishes have the tendency to remain still as long as the friction from the movement of the tablecloth is not too great.
  • Shaking a bottle of ketchup. When bringing the bottom down, the suddenly stopping it, inertia is what causes the ketchup to come out of the bottle.
  • If one drove a car directly into a brick wall, the car would stop because of the force exerted upon it by the wall. However, the driver requires a force to stop his body from moving, such as a seatbelt, otherwise inertia will cause his body to continue moving at the original speed until his body is acted upon by some force.
  • Hovercraft are vehicles that can be a challenge to manipulate because, unlike cars, they do not have the same level of friction, so inertia causes the Hovercraft to want to continue in its same direction without stopping or turning.
  • Abruptly stopping a cart with an object on top causes the object on top to fall off. Inertia causes this by making the object want to continue moving in the direction that it was.
  • If a stopped car is hit by a moving car from behind, the passengers inside may experience whiplash as a result of the body moving forward but the head lagging behind. The head is experiencing inertia.
  • When a car is abruptly accelerated, drivers and passengers may feel as though their bodies are moving backward. In reality, inertia is making the body want to stay in place as the car moves forward.
  • If an index card is placed on top of a glass with a penny on top of it, the index card can be quickly removed while the penny falls straight into the glass, as the penny is demonstrating inertia.
  • If you jump from a car of bus that is moving, your body is still moving in the direction of the vehicle. When your feet hit the ground, the grounds act on your feet and they stop moving. You will fall because the upper part of your body didn’t stop and you will fall in the direction you were moving.
  • When you stir coffee or tea and stop, the swirling motion continues due to inertia.

Cheers!

sponsored by Forge of Empires

The must-play city building game of the year.
Journey through historical ages in this award-winning city building game.
Play Now at forgeofempires.com

In other languages

En español: ¿Cuáles son algunos ejemplos de la Primera Ley del Movimiento de Newton?
Auf Deutsch: Welche sind Beispiele für Newtons erstes Bewegungsgesetz?
In italiano: Quali sono alcuni esempi della prima legge del moto di Newton?
Dalam bahasa Indonesia: Apa saja contoh hukum pertama gerak Newton?
Em português: Quais são alguns exemplos da primeira lei do movimento de Newton?
हिन्दी में: न्यूटन के गति से प्रथम सिद्धांत (First Law of Motion) के कुछ उदाहरण क्या हैं?