The force that occurs when two surfaces rub against each other.
What is friction?
100
Speed in a given direction.
What is velocity?
100
Frosty the Snowman sliding down a snowhill is an example of this type of friction.
What is sliding friction?
200
Energy that is in motion.
What is kinetic energy?
200
A fixed object that is used to determine motion has occurred.
What is reference point?
200
These two factors affect friction.
What are the types of surfaces and how hard the surfaces are pushed together?
200
A change in an object's speed or direction.
What is acceleration?
200
The rate at which objects are pulled or fall to the Earth.
What is 9.81 m/s/s?
300
Potential energy is greatest at this point of a roller coaster.
What is the highest point?
300
When measuring distance in our science class, this unit is used.
What is meters?
300
This type of friction occurs when objects aren't moving.
What is static friction?
300
When calculating speed or velocity, we divide distance by this.
What is time?
300
An object's _______________ and distance apart from each other affect gravitational pull.
What is mass?
400
This is the equation to calculate potential energy.
What is mass x height x velocity?
400
When measuring the mass of an object, use these units.
What are grams or kilograms?
400
A ball rolling down the bowling alley is an example of this type of friction.
What is rolling friction?
400
If a straight diagonal line appears on a graph, we say the object is travelling at a ___________________.
What is constant speed?
400
A push or pull.
What is a force?
500
This is the formula for calculating kinectic energy.
What is 1/2 mass x velocity (2)
500
The system of measurements used in most of the world.
What is the Systeme International or SI units?
500
A hang glider sailing through the sky and a seal swimming in the water are examples of this type of friction.
What is fluid friction?
500
When calculating acceleration, one must first subtract the final speed and the _____________ ___________ before dividing by time.
What is initial velocity?
500
Two people are moving a refrigerator. One person pushes the fridge with 25 N and the other pulls the fridge with 30 N. Adding these two forces together, gives you this.