Isaac Newton
Who was Isaac Newton?
An English scientist and mathematician who developed important ideas about motion and gravity.
What is Newton’s First Law also called?
The Law of Inertia.
What is Newton’s Second Law about?
The relationship between force, mass, and acceleration.
What is Newton’s Third Law?
For every action, there is an equal and opposite reaction.
A book stays on a desk until someone moves it. Which law?
First Law.
In what country was Isaac Newton born?
England.
What does an object at rest tend to do?
Stay at rest.
What is the formula for Newton’s Second Law?
F = ma (Force = mass × acceleration)
What happens whenever one object exerts a force on another object?
The second object exerts an equal and opposite force back.
You kick a soccer ball and it speeds up. Which law?
Second Law.
What famous book did Newton publish in 1687?
Principia Mathematica.
What does an object in motion tend to do?
Stay in motion at the same speed and direction unless an unbalanced force acts on it.
What happens to acceleration when force increases?
Acceleration increases.
Give an example of Newton’s Third Law.
When you jump, you push down on the ground and the ground pushes you upward.
A rocket pushes exhaust downward and moves upward. Which law?
Third Law.
Besides physics, what other subjects did Newton study?
Mathematics, astronomy, and optics.
What force can change an object's motion?
An unbalanced force.
What happens to acceleration when mass increases but force stays the same?
Acceleration decreases.
How does a rocket move upward?
The rocket pushes gases downward, and the gases push the rocket upward.
A heavier shopping cart is harder to accelerate. Which law?
Second Law.
What are three major areas Newton is known for contributing to?
Laws of motion, gravity, and calculus.
Give an example of the First Law in everyday life.
A soccer ball stays still until someone kicks it.
Why is it harder to push a heavy object than a light object with the same force?
A larger mass requires more force to produce the same acceleration.
Why does a swimmer move forward when pushing water backward?
The swimmer pushes water backward, and the water pushes the swimmer forward.
You jump off a boat, and the boat moves backward. Which law?
Third Law.