It takes ______ to change the motion of an object.
What is Force.
100
How quickly power is preformed.
What is work.
200
The amount of kinetic energy is proportional to the momentum of the object and _______ of the object.
What is Speed.
200
The object is not preforming work, but is ____ __ preform work.
What is (able to).
200
True or False. The units for work and energy are the same, What are they?
What is True-Joules
200
_____ is preformed when a force moves an object.
What is Work.
200
The longer period of time, the _____ the power.
What is smaller.
300
When is kinetic the greatest on a roller coaster?
What is when it rolls down the curve/hill.
300
Potentail Energy= (____)*(_______)*(_____)
What is (mass), (gravitational acceleration), (height)
300
Energy in one object can be transferred to another object.
What is Energy Transfer.
300
You always put ____ _____ into a machine than you get out of a machine
What is more work
300
Who are the units of power named after?
Who is James WATT.
400
What is the only variable to be squared in the kinetic energy equation?
What is Velocity.
400
Where is potential energy the greatest on a roller coaster?
What is The top of the hill/curve.
400
A nuclear reaction creates heat and light in the sun. The ______ energy is then converted to ______ energy by plants.
What is Light; Chemical
400
Work effecienty is measured in ____.
What is Percent-%.
400
True or False. If you push against a wall is the any work involved.
What is false.
500
True or False. Helium gas in a balloon has kinetic energy.
What is True. Gases are always moving around-rapidly.
500
True or False. A used battery potential energy.
What is False...Potential Chemical Energy.
500
While the Total Energy of an object cannot be altered without altering the forces on the object, the form of the energy can be changed.
What is Energy Conservation.
500
You do 20 J of work in pushing a crate up a ramp. If the output work from the inclined plane is 16 J, then what is the efficency of the inclined plane?
What is 80%
500
How could you calculate the power exerted by someone climbing the stairs?
What is by the work exerted in the time it took to walk up the stairs.