Force
What is the definition of force?
an action exerted on a body in order to change the body’s state of rest or motion; force has magnitude and direction
What are the units used for each: force, work, and power?
Force = newtons, work = joules, power = watts
What is Potential Energy?
Potential energy is when something has the potential to move
What is the definition of work?
the transfer of energy to a body by the application of a force that causes the body to move in the direction of the force
What is a first-class lever?
All first-class levers have a fulcrum located between the points of application of the input and output forces.
What is Kinetic Energy?
kinetic energy is when it is moving
What is the definition of power?
quantity that measures the rate at which work is done or energy is transformed
What is a simple machine?
one of the six basic types of machines, which are the basis for all other forms of machines
What is the importance of Solar Energy?
Solar energy is a renewable resource so it is a lot less damaging to the environment than not renewable resources, such as fossil fuels.
What is the equation for work?
Force x distance = work
Give an everyday example of each type of simple machine.
Light switch, flag pole, doorknob, slide, knife, jar lid
What is the Law of Conservation of Energy?
The law of conservation of energy states that energy cannot be created or destroyed.
A crane uses an average force of 2000 N to lift a girder 5 m. How much work does the crane do on the girder? EXPLAIN YOUR ANSWER
2000N x 5M = 10,000 J
What are the six simple machines?
Simple lever, pulley wheel, axle, simple inclined plane, wedge, screw
What did you learn from constructing a catapult and launching a marshmallow?
I learned that simple machines are used in everyday objects and you can even build your own simple machines. Potential energy is what energy the marshmallow has when it is on the spoon. Kinetic energy is obtained once the marshmallow is launched.