Complete review

Mechanical work

Mechanical work

the amount of mechanical energy transferred to an object by a force

Mechanical energy

the energy of an object that is part of its total energy that can change by mechanical work

Magnitude

the amount of work depends on the __________ of the force

Displacement

The amount of work depends on the _____________ of the object

Nxm

1J is equal to

positive

if there is an applied force, it will do ___________ work on the object and total mechanical energy

Negative

if there is a frictional force opposing motion, it will do __________ work on the object and total mechanical energy

0

when a force exists, but an object does not move, W = ___

0

When an object is in uniform motion but does not require a force to keep it in motion, W = ___

0

When a force acting on an object is perpendicular to the direction of motion, W =___

Energy

The ability to do work

Mechanical energy

Kinetic energy + potential energy within a system = _________________

4

If Velocity doubles, what factor does kinetic energy increases by? (number)

2

Same speed, but one object has twice the mass of the other, what is the kinetic energy of the larger car compared to the smaller car? (number)

Work-kinetic energy theorem

what theorem is shown with: Fnet = ma

Potential energy

energy that is stored in an object due to its position or condition

Gravitational energy

energy stored in an object due to its distance above the surface of Earth

Gravitational

when work is done against the force of gravity it is stored as __________________ energy

Decrease

as an object is falling a height, the gravitational potential energy will _______________.

conservation of energy

what law is said that energy is neither created nor destroyed but may be transferred or converted into another form

Conservative force

force that includes gravity, magnetic, electrical, elastic, and nuclear forces

Energy changes that are reversible

Non-conservative force

force that includes friction, air resistance, drag, rocket thrust

Energy changes are not reversible or lost and converted