Vocabulary
He lived between 384-322 BC, and his teachings were the basis for Roman Catholic philosophy and were very hard to overturn by future scientists, as a result.
Who is Aristotle?
Newton's First Law
What is an object in motion or at rest tends to stay in motion or at rest unless an unbalanced force acts upon it?
Newton's 2nd Law
What is Net Force = mass x acceleration?
OR
When an object is acted on by one or more outside forces, the total force is equal to the mass of the object times the resulting acceleration.
Newton's 3rd Law
What is for every action, there is an equal and opposite reaction?
He was knighted by Queen Anne in 1705 for all of his accomplishments in the field of science; some of which included developing the 3 laws of motion and a law describing gravity.
Who is Sir Isaac Newton?
In one of our experiments, this kept spinning due to inertia, even after it was physically stopped.
What is the raw egg?
kg times m over seconds squared
What is another way to show the unit "Newton"?
OR
The force unit
A student leans against the wall with a force of 25 Newtons to the east. With what force does the wall act on the student?
What is 25 Newtons to the west?
DAILY DOUBLE!!!! friction
What is a force that opposes motion, resulting from the contact of two surfaces?
He believed that by studying science, he was actually learning about God. During his life, he established the scientific laws that govern 99% of what we see & feel every day.
Who is Sir Isaac Newton?
The reason the penny didn't drop into the jar when the index card it was resting on was slowly pulled across the opening of the jar, which is what Aristotle thought would happen.
What is friction?
A vector quantity whose magnitude is usually measured in Newtons.
What is force?
An ice skater stands on the ice in his skates. He is holding a ball. Assuming there is no friction, what will happen to the ice skater if he suddenly throws the ball hard to the east?
What is he will move to the west?
He believed that the normal state of objects on Earth was to be at rest, & the normal state of objects in the heavens was to move in circles.
Who is Aristotle?
DAILY DOUBLE!!! The reason seatbelts are needed to keep us safe in a car when the brakes are applied forcefully.
What is inertia? Explain...
The brakes are only applied to the car, not the people inside the car. People can be flung forward and get injured if not wearing seatbelts.
When something is stationary relative to the surface upon which it sits, the frictional force is large and the object is hard to move.
What is static friction?
DAILY DOUBLE!! A child pushes against a St. Bernard dog, trying to move him. The dog remains stubbornly unmoved. Something exerts the equal and opposite force, which Newton's 3rd Law of Motion says must happen in response to the child's push.
What is the St. Bernard dog pushing against the child?
DAILY DOUBLE!! The scientist who promoted doing experiments rather than just observing nature around him worked hard to overturn some of Aristotle's mistaken conclusions and began to develop the idea of inertia.
Who is Galileo?
A person jumping from an airplane & wishing to land on a hill cleared of trees will jump out of the plane before he can even see the hill, as they are approaching the hill, or when they are directly over the hill.
What is "as they are approaching the hill"?
DAILY DOUBLE!!! A box is moving at a constant velocity; it is not speeding up, slowing down, or changing direction. What is its rate of acceleration?
What is 0?
Forces always exist in ______________?
What are pairs?