Work, Energy, and Conservation Principles
Quiz
What is the term for the amount of change a force can cause? - correct answersWork
What is an example of a non-conservative force? - correct answersFriction, Air resistance,
Collisions
What is an example of a conservative force? - correct answersGravity, Spring force
When lifting something at a constant velocity, the lifting force is equal to what? - correct
answersWeight (mg) of force of gravity
What is the term for anything that takes energy away from a system? - correct answersNon-
conservative force
What is the term for the ability to do work? - correct answersEnergy
If I lift something to a certain height, the work I have done is equal to what energy? - correct
answersPotential Energy (PEg)
If I do work to throw an object, the work I do is equal to what energy? - correct answersKinetic
Energy (KE)
Non-conservative work causes most energy to be lost to what form of energy? - correct
answersHeat
In the pendulum lab, the PEg of the pendulum when it was released is equal to the KE of the
pendulum at what point? - correct answersThe lowest point
What is energy due to position called? - correct answersPotential Energy
If I triple the height of an object, what happens to its PEg? - correct answersIt will triple
What is the term for the fact that the total energy of a system always remains constant? - correct
answersConservation of Energy
What is Rest Energy? - correct answersEnergy due to mass
What is the equation for rest energy? - correct answersE = mc²
Calculate the work done by a 200 N force acting on a 5.0 kg crate over a distance of 2.0 m. -
correct answers400 J
Calculate the PEg of a 2.0 kg mass at a height of 5.0 m. - correct answers100 J
Calculate the KE of a 5.0 kg mass traveling at 10.0 m/s. - correct answers250 J
, A ball is dropped from rest at a height of 7.2 m, what is its velocity just before it hits the ground?
- correct answers12 m/s
A pendulum has a velocity of 2.0 m/s at its lowest point, what is its starting height? - correct
answers0.2 m
What is the term for the rate at which work is done? - correct answersPower
If I double the velocity of an object, what happens to its KE? - correct answersIt will increase 4x
What types of energy exist at point D in the given scenario? - correct answersPotential Energy
(PEg) and Kinetic Energy (KE)
Given the Force (F) vs Displacement (x) graph, what is the work done by the force? - correct
answers80 J
Both Watt and Joule have this same first name. - correct answersJames
A 2.0 kg object starts from rest on a 10 m hill and slides down to the bottom and back up a 6.0
m hill, what is the velocity of the ball on top of the 6.0 m hill? - correct answers8.94 m/s
Gravity is considered what type of force? - correct answersconservative
When gases, liquids, or solids are in contact with a moving object, the flow of _____ occurs due
to frictional forces. - correct answersheat
When an exothermic reaction releases thermal energy, this energy is usually_____. - correct
answers- Not useable to do work
- dissipated by conduction
A generator converts _____ energy into _____ energy. - correct answersmechanical; electrical
If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy
(ME) does it possess? - correct answersexactly 3.92 J
A 0.200-kilogram ball sits on a shelf 2.00 meters from the floor and then falls to a point 1.00
meter from the floor. Ignoring any affects due to friction, at this position _____. - correct
answers-its mechanical energy is 3.92 J
-its potential energy is 1.96 J
-its kinetic energy is 1.96 J
Gravity is considered what type of force? - correct answersconservative
When gases, liquids, or solids are in contact with a moving object, the flow of _____ occurs due
to frictional forces. - correct answersheat
Quiz
What is the term for the amount of change a force can cause? - correct answersWork
What is an example of a non-conservative force? - correct answersFriction, Air resistance,
Collisions
What is an example of a conservative force? - correct answersGravity, Spring force
When lifting something at a constant velocity, the lifting force is equal to what? - correct
answersWeight (mg) of force of gravity
What is the term for anything that takes energy away from a system? - correct answersNon-
conservative force
What is the term for the ability to do work? - correct answersEnergy
If I lift something to a certain height, the work I have done is equal to what energy? - correct
answersPotential Energy (PEg)
If I do work to throw an object, the work I do is equal to what energy? - correct answersKinetic
Energy (KE)
Non-conservative work causes most energy to be lost to what form of energy? - correct
answersHeat
In the pendulum lab, the PEg of the pendulum when it was released is equal to the KE of the
pendulum at what point? - correct answersThe lowest point
What is energy due to position called? - correct answersPotential Energy
If I triple the height of an object, what happens to its PEg? - correct answersIt will triple
What is the term for the fact that the total energy of a system always remains constant? - correct
answersConservation of Energy
What is Rest Energy? - correct answersEnergy due to mass
What is the equation for rest energy? - correct answersE = mc²
Calculate the work done by a 200 N force acting on a 5.0 kg crate over a distance of 2.0 m. -
correct answers400 J
Calculate the PEg of a 2.0 kg mass at a height of 5.0 m. - correct answers100 J
Calculate the KE of a 5.0 kg mass traveling at 10.0 m/s. - correct answers250 J
, A ball is dropped from rest at a height of 7.2 m, what is its velocity just before it hits the ground?
- correct answers12 m/s
A pendulum has a velocity of 2.0 m/s at its lowest point, what is its starting height? - correct
answers0.2 m
What is the term for the rate at which work is done? - correct answersPower
If I double the velocity of an object, what happens to its KE? - correct answersIt will increase 4x
What types of energy exist at point D in the given scenario? - correct answersPotential Energy
(PEg) and Kinetic Energy (KE)
Given the Force (F) vs Displacement (x) graph, what is the work done by the force? - correct
answers80 J
Both Watt and Joule have this same first name. - correct answersJames
A 2.0 kg object starts from rest on a 10 m hill and slides down to the bottom and back up a 6.0
m hill, what is the velocity of the ball on top of the 6.0 m hill? - correct answers8.94 m/s
Gravity is considered what type of force? - correct answersconservative
When gases, liquids, or solids are in contact with a moving object, the flow of _____ occurs due
to frictional forces. - correct answersheat
When an exothermic reaction releases thermal energy, this energy is usually_____. - correct
answers- Not useable to do work
- dissipated by conduction
A generator converts _____ energy into _____ energy. - correct answersmechanical; electrical
If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy
(ME) does it possess? - correct answersexactly 3.92 J
A 0.200-kilogram ball sits on a shelf 2.00 meters from the floor and then falls to a point 1.00
meter from the floor. Ignoring any affects due to friction, at this position _____. - correct
answers-its mechanical energy is 3.92 J
-its potential energy is 1.96 J
-its kinetic energy is 1.96 J
Gravity is considered what type of force? - correct answersconservative
When gases, liquids, or solids are in contact with a moving object, the flow of _____ occurs due
to frictional forces. - correct answersheat
