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Written by Mumtaj Khan
Feb 26, 2026

Know About Newton’s Three Laws of Motion

Floating through air, rolling down streets, stepping forward - motion shows up constantly. Not just machines but creatures too shift position every day. Ever paused to think about what guides these movements? A thinker named Isaac Newton laid out answers long ago, back when candles lit homes. His ideas from hundreds of years past still shape how we see pushes, pulls, and speed today.

Motion follows rules spotted long ago by Newton. His trio of ideas shapes much of what we know about movement. One law says still things stay put unless pushed. Another links pushes to changes in motion. The third tells us every push has a twin pull elsewhere. Engineers rely on these thoughts when building machines. Astronauts depend on them while flying beyond Earth. Simple actions like walking also follow such patterns without us noticing. These principles remain useful after hundreds of years. Their reach stretches from tools at home to vehicles among stars.

YouTube Video Link: https://youtu.be/MfUs9X3vNdo?si=q6VOiG8D4OauLc6Z

Newtons First Law

The first law states:

When nothing pushes or pulls it, a thing stays still or keeps going straight without changing how fast it moves.

A push won’t easily alter how something moves - that stubbornness has a name. It’s what happens when an object just keeps doing its thing unless forced otherwise.

Example:

A still book on a table stays put until a push acts on it. Rolling motion in a ball keeps going till something like friction gets in its way.

Imagine you're sliding ahead when brakes hit - your body resists stopping, that's inertia at play. Seatbelts matter because of this push-forward moment during sudden stops.

Newtons Second Law Force and Acceleration

Force changes how things move, that is what the second rule shows. Written down, it looks like this:

Pushing something depends on how heavy it is, also how fast you speed it up. A heavier object needs more push to move quickly. If acceleration increases, so does the effort needed. Mass stays constant, yet force changes when motion shifts. The formula links these three elements together tightly

This means:

  • A stronger push leads to faster speed gains. When you increase the effort, movement picks up quicker. Greater pressure means objects go quicker than before.
  • Falling on the heavier side, items need a stronger push. A solid shove suits big weights best.

Example:

A full cart resists movement more than an empty one. Because of greater weight, getting it going takes stronger effort.

From here, motion of cars ties back to rocket launches through one rule. That idea makes it possible to track both speeding trucks and spacecraft climbing past atmosphere.

Newtons Third Law Action Equals Reaction

For every action, there is an equal reaction waiting on the opposite side

A force always meets resistance just as strong. When something pushes, another push happens back. Every move triggers a countermove of matching strength.

Falling into place, every force shows up with a partner. Each one needs the other just by existing.

Example:

Upward you go because your leap presses down - then Earth answers back. The harder the push beneath, the higher the rise above.

Upward goes the rocket because it forces gas down first. That push back happens every time without exception.

Why These Laws Matter

Falling apples start with a tug we call gravity. Engineers use these rules when building bridges that must hold steady under weight. When you push a shopping cart it moves because force changes motion. Rockets rise by kicking gas downward hard enough to lift off. Every action has an opposite twin reaction tagging along behind. Objects stay still unless something comes along to trouble their rest

  • Engineering and construction
  • Space exploration
  • Vehicle design
  • Sports science

Without these rules, grasping how things move or push would be impossible. Motion makes sense only when seen through them.

Conclusion

When things stay still or keep moving, that is what Newton's first idea covers. Moving stuff tends to do just that unless something stops it. Push harder on an object, its speed changes faster - that links force and motion together. Forces always come in pairs; one push leads to another back at you. Each rule connects clearly to real movement seen every day.

Still today, long past their creation, these rules form the base of how we build and explore. Because of them, daily motion makes sense - also journeys beyond Earth.

Falling apples led one thinker to unlock secrets still shaping how we see everything around us now.

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