Energy -
Capacity to do work
I)
Work - when a ___________
causes an object to __________
in the direction of that force.
*** ______________
- means direction doesn't count
A) Equation
W = ________ Fm
- force acting in same direct as motion
(Nm) (N)(m) d - displacement
Other units for work (______________) or | Kg m2 | ||
sec2 |
Challenge Question: Two people exert a 10
Did both people do the
same work???
B) Work and F vs. displacement diagram
____________
under a Force vs. displacement plot is equal to ________
II. Energy (Joules) - 2 kinds
A)
Potential Energy - ________________
energy that an object has
due to its
________________ or ________________
1.
________________ P.E. g (PE is an abbreviation for
Potential Energy)
Not in reference
P.E. g = ________________ g
- on earth = 9.8 m/s2
units
mg
= ________________________________
h = ________________ - distance force could be exerted
DP.E. = ________________
Ex) What P.E. is gained when a 100 kg object when
it is raised 4m straight
up?
What PE
would be gain if the object were moved 4m to the right?