Conceptual Physics Exam 1 Flashcards
centrifugal force
An apparent outward force on a rotating or revolving body.
turbine
A paddle wheel driven by steam, water, or other power that is used to do work.
power
The rate at which work is done or energy is transformed; equal to the work done or the energy transformed divided by time; measured in watts.
acceleration (a)
The rate at which an object’s velocity changes with time; the change in velocity may be in magnitude (speed), or direction, or both.
kinetic energy (KE)
The energy of motion; equal (nonrelativistically) to mass multiplied by the square of the speed, multiplied by the constant 1/2.
support force
An upward force that balances the weight of an object on a surface.
action force
One of the pair of forces described in Newton’s third law. See also Newton’s laws of motion, Law 3.
mass (m)
The quantity of matter in an object; the measurement of the inertia or sluggishness that an object exhibits in response to any effort made to start it, stop it, or change in any way its state of motion; a form of energy.
acceleration due to gravity ( g )
The acceleration of a freely falling object. Its value near Earth’s surface is about 9.8 m/s2 (9.8 m/s each second).
rotational velocity
Rotational speed together with a direction for the axis of rotation or revolution.
relative
Regarded in relation to something else, depending on a point of view or frame of reference. Sometimes referred to as “with respect to.”
fulcrum
The pivot point of a lever.
newton (N)
The SI unit of force. One newton is the force applied to a 1-kilogram mass that will produce an acceleration of 1 meter per second per second.
conserved
The term applied to a physical quantity, such as momentum, energy, or electric charge, that remains unchanged during interactions.
cyclotron
A particle accelerator that imparts high energy to charged particles such as protons, deuterons, and helium ions.
