Newton’s Laws of Motion
What are Newton’s Laws?
Newton’s laws explain how objects move when forces act on them. There are three laws.
First Law of Motion (Law of Inertia)
An object will remain at rest or move with constant speed in a straight line unless an external force
acts on it.
Example: A book on a table stays there until you push it.
Second Law of Motion
Force is equal to mass multiplied by acceleration.
Formula: F = m × a
Example: A light ball moves easily, a heavy stone needs more force.
Third Law of Motion
For every action, there is an equal and opposite reaction.
Example: While walking, you push the ground backward and it pushes you forward.
Summary:
1st Law: No force, no change in motion.
2nd Law: Force decides acceleration.
3rd Law: Action equals reaction.
What are Newton’s Laws?
Newton’s laws explain how objects move when forces act on them. There are three laws.
First Law of Motion (Law of Inertia)
An object will remain at rest or move with constant speed in a straight line unless an external force
acts on it.
Example: A book on a table stays there until you push it.
Second Law of Motion
Force is equal to mass multiplied by acceleration.
Formula: F = m × a
Example: A light ball moves easily, a heavy stone needs more force.
Third Law of Motion
For every action, there is an equal and opposite reaction.
Example: While walking, you push the ground backward and it pushes you forward.
Summary:
1st Law: No force, no change in motion.
2nd Law: Force decides acceleration.
3rd Law: Action equals reaction.
