Work
The application of a force that causes a body to move in the direction of the force in order to transfer energy to the body.
What is work?
the energy related with a moving object. It is also a scalar quantity
What is kinetic energy?
It is conserved.
What happens when something remains constant?
A quantity that measures the rate at which work is done or energy is transformed.
What is power?
When the force component and the displacement are moving in the same direction.
When is work positive?
Work is done.
What happens when an object is displaced?
The stored energy that depends on both an object’s properties and its interactions with the environment.
What is potential energy?
The amount of work that an object's kinetic and potential energy can do.
What is mechanical energy?
W=Watt
What is the SI unit for power?
The height and the free-fall acceleration.
What are two factors that affect gravitational potential energy?
The part parallel to the displacement of an object.
What is the only part of a force that does work?
The change in an object's kinetic energy is equal to the net work done by all the forces acting on the object.
The mechanical energy is changed into other more difficult forms of energy.
What happens when friction is present?
Hp=horsepower
What is an alternative SI unit for power?
The potential energy related to an object's position relative to a source of gravity.
What is gravitational potential energy?
An object is moved by the action of a force.
What is the requirement for work to be done?
W=KE
What is the formula for the work kinetic energy theorem?
Em=Ep+ Ek
What is the formula for mechanical energy?
P=W/T
What is the formula for power?
1/2mv^2i+mghi=1/2mv^2f+mghf
What is the formula of conservation of mechanical energy when gravity is the only force?
Wnet=Fnet(d) cos(theta)
What equation is used when multiple forces are acting on an object?
KE=1/2mv^2
What is the formula for kinetic energy?
MEi = MEf
What is the formula for the conservation of mechanical energy?
P=fv
What is an alternative way to write the equation for power?
The energy contained within any deformed elastic object. (Ex. a spring).