Energy, motion, Force, Work
What is the definition of energy?
The ability to do work or cause change
What is Kinetic Energy? Its formula? And what is potential energy?
Energy of motion
1/2ms^2
Energy stored
Before Mrs. Hernandez decides what to wear for the day, she wants to know what the temperature is going to be. Which type of energy is most closely related to temperature?
A. chemical
B. electrical
C. mechanical
D. thermal
D
CAN ALL FORMS OF ENERGY BE TRANSFORMED INTO OTHER FORMS OF ENERGY?
YES
The maximum amount of work is done when what both factors are in the same direction?
Movement and force
True or False
“ the slower the object moves, the more kinetic energy it has”
False
What are the three factors that determine an object's mechanical energy?
Motion, shape, position, or a combination of these factors
NO
TRUE OR FALSE
“ NO MATTER HOW MUCH FORCE TOU EXERT, YOU DONT DO ANY WORK IF THE LID DOES NOT MOVE”
TRUE
What are the two types of potential energy?
Gravitational Potential energy and Elastic Potential Energy.
TRUE OR FALSE
THE MORE THERMAL ENERGY THERE IS, THE SLOWER THE PARTICLES MOVE AND THEY MOVE CLOSER TO ONE ANOTHER
FALSE
THE PARTICLES SPREAD APART AND MOVER FASTER
Any kinetic energy not transferred is transformed into what?
Thermal Energy
what is the formula of power?
A) It’s work / distance
B ) it’s force/work
C) force /time
D) Work / time
D
Type of potential energy that is related to how high it is above the ground.
Which type of energy belongs only in the kinetic energy category?
A. chemical
B. electromagnetic
C. mechanical
D. thermal
B. electromagnetic
Does the total amount of energy in in system ever change?
no
If I know the formula for work is Force x Distance. And a grandpa lifts a baby 1.5m with an upward force of 60 N. Find out how much work is done?
90
What is the formula for Gravitational Potential Energy
A) Force times distance
B) Force times weight
C) Weight times Height
D) Power time Height
C
Which one releases more energy? Fusion or fission?
Fusion
B,C