Non-contact Forces
Kinetic or Potential Energy
Friction
Inertia
Balanced or Unbalanced Forces
100
This non-contact force pulls objects down toward the center of the Earth.
What is gravity?
100
When a book sits completely still on a desk, the net force acting on it is equal to this number.
What is zero (0 Newtons)?
100
This is the direction friction always acts relative to an object's motion.
What is the opposite direction?
100
This physical property of an object determines how much inertia it has.
What is mass?
100
When a book sits completely still on a desk, the net force acting on it is equal to this number.
What is zero (0 Newtons)?
200
This contact force happens when a person pushes a grocery cart forward.
What is applied force?
200
An object's kinetic energy depends directly on these two variables.
What are mass and speed (or velocity)?
200
This common type of friction acts on objects traveling through the air.
What is air resistance (or drag)?
200
Inertia is famously described by this numbered Law of Motion by Isaac Newton.
What is Newton's First Law of Motion?
200
This type of force causes an object's speed or direction to change.
What is an unbalanced force?
300
This non-contact force can either attract or repel certain metal objects without touching them.
What is magnetic force?
300
As a roller coaster zooms down the tallest hill, potential energy transforms into this.
What is kinetic energy?
300
This type of friction prevents a heavy box from moving when you first push it.
What is static friction?
300
If a car stops suddenly, passengers lurch forward because their body's inertia wants to do this.
What is stay in motion?
300
If two people pull a rope in opposite directions with 50 N of force each, the forces are described as this.
What is balanced?
400
This upward contact force is exerted by water or air, keeping objects afloat.
What is buoyant force?
400
This type of potential energy is stored in a tightly compressed rubber band or spring.
What is elastic potential energy?
400
Putting oil on a squeaky door hinge reduces friction by providing this category of substance.
What is a lubricant?
400
An object floating in deep space will do this forever unless acted upon by an outside force.
What is move at a constant speed in a straight line?
400
Look at the visual vector layout below. Calculate the net force and the final direction of the box.
What is 10 N to the right?
500
This non-contact force causes your hair to stick to a balloon after rubbing it against a sweater.
What is electrostatic force?
500
Look at the roller coaster energy diagram below. At which exact location along the track does the coaster cart possess the maximum kinetic energy and the minimum potential energy?
What is the very bottom of the first hill (the lowest point)?
500
Between rough sandpaper, smooth ice, and a waxed gym floor, this surface generates the highest friction force.
What is rough sandpaper?
500
Between a heavy bowling ball and a light soccer ball, this one has less inertia.
What is the soccer ball?
500
According to Newton's Second Law, this property of an object increases when net unbalanced force increases while mass stays the same.
What is acceleration?