Work and Power Flashcards
is a push or pull on an object
force
what type of quantity is force
vector quantity, with both magnitude and direction
whats the formula for force? and whats their meaning
F = ma
F - net force in newton (N)
m = mass in (kg)
a - acceleration in (m/s^2)
what is a larger net force and explain
acting on an object causes a larger acceleration, and objects with larger mass require more force to accelerate
what happens when u lifted the book?
force was applied upward
the book also moved upward
work was done in
what happens when u pushed a table
The table moved along the same direction as
the force applied.
you do __by exerting __ on the
object through a __.
work, force and distance
exerts on the object moves the object from one place to another, that is, the object undergoes a __
force and displacement
In Physics, work is DONE when
a force is applied to an object causing a
motion in the same line of action of the force
is transfer of energy
work
when work is done __ a body or system
that body or system __
- DONE BY
- loses energy
when work is done __a body or system-
that body or system __
- DONE ON
- gains energy
energy is defined as the
capacity to do work
2 actions that there is no work done
- man walking with a bag
- pushing a wall
which the force causes the body to move
in the direction of the force
distance
whats the work formula and their SI units?
w = Fd
SI UNITS:
w = Nm or J
F = N
d = m
the product of the magnitude of
the __ multiplied by
the component of the __
displacement
force parallel to the displacement
what type of quantity is work?
scalar quantity
is given a special name for work
N-m
whos the person that names the SI unit Joules?
James Prescott Joule
𝜃 = 90
no work done
𝜃 = 0
positive work done
𝜃 = 180
negative work done
How is power developed?
Pertains to HOW FAST YOU DID WORK or TRANSFER ENERGY (used up your energy or
expend)
