Vocabulary and Formulas
Distance over time, measured in meters
What is speed?
These are materials in which electrons can flow easily
What is a conductor?
This is the net force when you and your brother push a box down a hallway. He pushes with a force of 10N and you push with a force of 10N
What is 20 Newtons?
The unit used to measure work
This is the movement of electric charges in a single direction
What is an electric current?
This is the ability to cause change
What is energy?
This is the force applied by a machine!
What is output force?
The speed of something, plus direction
What is Velocity?
This was Jane's speed during a 2 hour trip where she travelled a total distance of 20 miles.
This is the kind of acceleration an object has while slowing down
What is negative acceleration?
This is the force applied to a machine
What is the input force?
What is an insulator?
This is the total amount of kinetic and potential energy in a system
What is Mechanical Energy?
This is what unlike charges do to each other
What is repel?
This is how you calculate Force
What is Mass times Acceleration?
You do 900J of work pushing a fridge. It took 3 seconds. This is how much power you generated.
What is 300 Watts
The strength of force between two magnets depends on this
What is distance between magnets?
This is how machines can be made more efficient
What is reducing friction?
When an electric current flows through a wire, this is what forms around the wire
What is a magnetic field?
This kind of energy involves the flow of charged particles
What is electricity?
This is energy stored by things that can stretch
What is Elastic Potential Energy?
“The acceleration of an object is equal to the net force on an object divided by the mass of an object”
What is Newton's second law of motion?
A total of 200 Joules of work was required to lift a tree with a force of 10N. This is how far the tree was lifted
What is 20 meters?
The force that causes electric charges to flow
What is Voltage?
To calculate work, we can only input forces that move this way.
What is same direction?
This is a temporary magnet made by coiling a wire around an iron core.
What is an electromagnet?
What is potential energy?
This is the law that states that electric charges can be transferred from object to object
What is the Law of Conservation of Charge?
The rate at which Velocity changes over time
What is acceleration?
Most vehicles and motors use these within them to run.
What are electromagnets?
This is the force of friction of objects that are not in motion.
What is static friction?
This is the work is done on a pumpkin with a force of 16 N when its lifted 2 meters.
What is 32 Joules?
The tendency for material to oppose the flow of electrons, which transforms electrical energy into another kind of energy
The amount of kinetic energy in a system depends on these two things
What is velocity and mass?
This is the closed path that an electric current follows
What is a circuit?
The rate at which work is done by converting energy
What is Power?
A car starts from a stoplight and is traveling with a velocity of 40 m/sec east in 20 seconds. This is the acceleration of the car
What is 2m/s.
A car changes its velocity from 80 km/hr to 20 km/hr in 3 seconds. This is the resulting acceleration
What is 20 km/hr?
This machine makes work easier by decreasing input force while increasing distance.
What is an inclined plane?
This is how we can make electromagnets stronger
What is tighter coil?
What is Thermal Energy?
This is where chemical reactions occur in a moist paste causing the transfer of electrons.
What is a dry cell battery?