Where Are We Going?
A physical measurement that contains only a magnitude number and completely lacks any directional info.
What is a scalar quantity?
A fixed object or point against which all physical motion is actively measured.
What is a reference point?
Any basic push or pull that acts directly upon a physical object.
What is a force?
The universal force that actively opposes motion when the physical surfaces of two objects rub against each other.
What is friction?
The scientific term for an object's natural tendency to resist any sudden changes in its velocity.
What is inertia?
A physical measurement that strictly requires both a magnitude number and a specific direction.
What is a vector quantity?
If you are driving a car with a friend, this is the entity in motion relative to your perspective looking out the window.
What is the scenery (or the cow)?
The net force acting on a toy when two children pull on it with identical strength in completely opposite directions.
What is zero Newtons?
The specific type of friction that strongly opposes the very initiation or start of any motion.
What is static friction?
According to Newton's 1st Law, an object in motion will stay in motion unless it is acted upon by this type of force.
What is an unbalanced force?
The total distance an object travels plus the straight-line direction measured from its exact starting point.
What is displacement?
If you are driving a car with a friend, this is the person who is legally not in motion relative to your seat.
What is your friend?
The specific unit of measurement that equals one kilogram multiplied by a meter per second squared.
What is a Newton?
The specific type of friction that opposes motion once an object is already actively sliding across a floor.
What is kinetic friction?
The direction a driver is temporarily flung relative to their seat when a car accelerates quickly forward on a freeway ramp.
What is backward?
If a teacher walks her dog completely around the block and returns to her house, this is her total displacement.
What is zero?
The mathematical step required to solve a speed problem if your distance is in miles but your time is given as "30 minutes."
What is converting minutes to hours?
This direction points directly opposite to a 15 Newton force applied toward the south against a solid wall.
What is north?
To get a heavy refrigerator to slide, you must exert enough force to completely overcome this specific type of friction first.
What is static friction?
Newton's 3rd Law famously states that for every single action, there is an equal and opposite this.
What is a reaction?
This is the type of measurement represented by "74 miles per minute west."
What is a velocity?
The net acceleration of a bicyclist who is traveling at a perfectly constant speed straight down the middle of a hill.
What is zero acceleration?
Of the four fundamental universal forces in creation, this one is recognized by physicists as the absolute weakest.
What is the gravitational force?
This is why a space probe traveling toward Pluto does not need to burning fuel to maintain its velocity across the solar system.
What is because outer space has virtually no friction to slow it down?
This fundamental concept states that an object's acceleration is directly proportional to the net force and inversely proportional to its mass.
What is Newton's Second Law of Motion?