ability to do work ___________________ ___________________________
DESCRIPTION
energy. Ability to do work ___________________ ___________________________ occurs when a force causes an object to move in the direction of the force _______________________________. work. force. distance. Work = ____________ x _________ - PowerPoint PPT PresentationTRANSCRIPT
Ability to do work ___________________
___________________________
occurs when a force causes an object to move in the direction of the force
_______________________________
Work = ____________ x _________
When work is done _______________ is given by 1 object to another
Work & energy units _________________
1 J = amount of energy to lift an apple 1 m
Average serve of tennis ball = 75 J of KE
Fastball pitch = 120J of KE
Football pass = 150J of KE
Energy of motion ___________________
KE = mv2
2
_______________ has a greater effect on
kinetic energy than _____________
KE of a snail (mass 5g) traveling at 0.014 m/s
0.00000048J
KE of an 18-wheel truck traveling at 26.69 m/s
2,200,000 J
Energy of an object due to its position or shape
______________________________
_________________potential energy (GPE)
is work done on an object when opposing the force of gravity; work done on an
object to lift it to a given height
GPE depends on
________________ & ____________
GPE = weight x height
Units (N x m ) = ___________
PE of a stretched bungee or a stretched rubber band
_____________________
Total energy of motion and position
____________________________
Can be ____, ____, or _______
ME = PE + KE
Forms of energy
________________________
________________________
________________________
________________________
_________________________
_________________________
Thermal
Total energy of particles in an object
More energy if
________________________
_________________________
Chemical
Work done to form compound is stored in
chemical bonds between _________
Form of __________________energy
__________ consists of chemical compounds
Electrical
Energy of _________________________
Electrical energy of moving electrons is used to
__________________________
Form of _____________________energy
Sound
Cause by an object’s _________________
which transmit ________________
from ______________ to ___________
Form of ___________ & _________ energy
Light
Caused by the _____________ of electrically charged particles which transmit
_____________________
Nuclear
Energy associated with changes in the
_______
Produced when ____ nuclei join(ex: hydrogen in sun forms heliumcan only occur at 100,000,000 oC)
Or
When ____ nucleus splits(ex: PE stored in uranium)