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Kinetic Energy
Potential Energy
Thermal Energy
Equations
Work Problems
100
__________ is the ability to cause change.
Energy
100
_________ is the energy stored in an object due to its position
potential energy
100
what is thermal Energy
the sum of the kinetic and potential energy of all particles in an object
100
what is the equation for kinetic energy
KE=1/2 mv^2
100
Which of the following objects has potential energy? A) a glass sitting on a table B) a ball rolling across the floor C) a bicycle coasting down a hill D) a bowling ball knocking over a pin
A) a glass sitting on a table
200
What two factors determine how much kinetic energy an object has?
position and mass
200
A baseball is hit into the air with a bat. When does the baseball have the greatest gravitational potential energy?
when it reaches it highest point
200
heat is the _______that flows from a material with a higher temperature to one with a lower temperature.
Thermal Energy
200
what is the equation for Gravitational potential energy?
GPE=mgh
200
Which of the following vehicles has the most kinetic energy? A) a 1,100-kg car traveling 60 km/h B) a 900-kg car traveling 80 km/h C) a 300-kg motorcycle traveling 100 km/h D) a 2000-kg truck traveling 50 km/h
B) a 900-kg car traveling 80 km/h
300
what is kinetic energy?
kinetic energy is the energy in motion
300
What two factors determine how much potential energy an object has?
mass and position
300
thermal energy is the __________ of the particles in a material.
total Energy
300
what is the WORK equation?
W=f*d
300
The law of conservation of energy states that __________. A) energy can be created and destroyed but cannot change form B) energy is not created or destroyed and its form is constant C) energy cannot be created or destroyed D) when energy is transformed, the total energy of a system is less than it was before the change
C) energy cannot be created or destroyed
400
the total amount of potential and kinetic energy in a system is called __________.
Mechanical Energy
400
__________ is energy stored by things that stretch or compress
Elastic potential energy
400
The transfer of energy through matter by the direct contact of particles is called __________.
conduction
400
what is the power equation?
P=W/t
400
Which of the following is NOT a form of energy? A) friction B) thermal C) electrical D) chemical
A) friction
500
During energy transformations, energy is never __________.
Created or Destroyed
500
Energy stored in chemical bonds is __________.
chemical potential energy
500
Which of the following conducts heat most effectively?
Solid
500
what is the equation for thermal Energy
Q=M(Tf-Ti)C
500
One food Calorie is equivalent to approximately __________. A) 4 J B) 40 J C) 400 J D) 4,000 J
D) 4,000 J