what are newton's 1st 2nd and 3rd laws of motion?
Newton’s three laws of motion describe how forces affect the motion of objects. They are:
- Newton’s First Law (Law of Inertia)
An object at rest stays at rest, and an object in motion continues moving with the same speed in a straight line unless acted on by an unbalanced external force.
* Inertia is the **tendency** of objects to resist changes in their motion.
* Example: A book on a table will not start sliding on its own; a rolling ball keeps moving until friction or another force slows it down.
- Newton’s Second Law (Law of Acceleration)
The acceleration of an object depends on the net force acting on it and the object’s mass: F=maF=maF=ma, where FFF is net force, mmm is mass, and aaa is acceleration.
* More force → more acceleration for the same mass.
* Greater mass → less acceleration for the same force.
* Example: Pushing an empty shopping cart is easier (it accelerates more) than pushing a full one with the same push.
- Newton’s Third Law (Action–Reaction)
For every action, there is an equal and opposite reaction.
* Forces always come in pairs: if object A pushes on object B, object B pushes back on A with a force equal in size and opposite in direction.
* Example: When you jump, your feet push down on the ground, and the ground pushes you up with an equal and opposite force, launching you into the air.
If you’d like, I can add a short story-style explanation that ties all three laws together in one everyday scenario.