Mr. Bradley's Kinetic and Potential Energy

Mr. Bradley's Kinetic/ Potential Energy

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Poll

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​Kinetic Energy

​In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Multiple Choice

Energy in motion is ____________ energy.

• Potential

• Energy

• Kinetic

• Friction

Multiple Choice

The formula for power is

• work/time (P = W/t)

• force × distance (W = Fd)

• distance/time (s = d/t)

• mass × acceleration (F = ma)

​

• ​The energy concerned with the objects in motion or action is called kinetic energy. ...

• Kinetic energy can be transferred between objects. ...

• While kinetic energy is measured from the place itself, potential energy is measured from the bottom.

Multiple Choice

The formula for work is

• work/time (P = W/t)

• force × distance (W = Fd)

• distance/time (s = d/t)

• mass × acceleration (F = ma)

Multiple Choice

A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?

• 77 joules
• 70 joules
• 7.7 joules
• 11 joules

​Vocabulary

​Kinetic Energy is the energy of motion

​

​Mechanical energy is the sum of energy of position

​

​Potential Energy is the energy of position

Multiple Choice

When a roller coaster is at the top of a hill it has

• high potential energy

• high kinetic energy

• low potential energy

• equal amounts of kinetic and potential energy

Multiple Select

Which of these are measurements of power?

• 100 joules
• 100 watts
• 100 joules/second

• 100 hertz

Multiple Choice

Which of the following is true about work?

• It measures how quickly an object accelerates
• It measures how much effort is applied over a distance.
• It measures the change of an object's rate of speed.
• It measures how much time it takes to move an object.

Multiple Choice

What units do we use to measure work?

• watts
• newtons
• joules
• meters

Multiple Choice

How do you know when a force has been applied to an object?

• It moves.
• It flies.
• It accelerates.
• It gets bigger.

Multiple Choice

The energy of motion.

• Potential Energy
• Kinetic Energy

Multiple Choice

What is the equation for calculating power?

• distance / time
• work x time
• work / time
• force x distance

Multiple Choice

In which of these cases is work being done? 

• A student sleeps all night.
• A student pushes a locked door that does not move.
• A student carries his chair into another room.
• A student sits on the carpet.

Multiple Choice

When a roller coaster is at the bottom of a hill it has

• high potential energy

• high kinetic energy

• low kinetic energy

• equal amounts of kinetic and potential energy

Multiple Choice

A 500N block is lifted 10 m. How much work was done?

• 5000 J
• 500 J
• 50 J
• 5 J

Multiple Choice

When you rub your hands together on a cold day, you use friction to convert

• Mechanical energy into thermal energy
• Thermal energy into nuclear energy
• Nuclear energy into electrical energy.
• Electrical energy into radiant energy

Multiple Choice

Which of the following has kinetic energy?

• a rock poised for a fall

• an archer's bow that is drawn back

• a rolling bowling ball

• A spring that has been compressed

Multiple Choice

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

Multiple Choice

At which point(s) on the roller coaster is the kinetic energy at its maximum?

• A
• B
• C
• D

Multiple Choice

What is energy?

• the ability to do work
• mass and volume

Multiple Choice

If your teacher falls down these stairs, what would happen to his potential energy?

• Increase

• Decrease

• Remain constant

Multiple Choice

Is this an example of work?

• Yes

• No

Multiple Choice

What kind of energy is in a moving skateboard?

• Potential
• Kinetic

Multiple Choice

What does the picture show?

• Push

• Pull

Multiple Choice

What does this picture show?

• Push

• Pull

Multiple Choice

An act of moving something forward or away from you.

• Push

• Pull

Multiple Choice

The act of moving something closer.

• Push

• Pull

Multiple Choice

Name the force.

• Push

• Pull

Multiple Choice

What does the picture show?

• Push

• Pull

Multiple Choice

What does this picture show?

• Push

• Pull

Multiple Choice

What are the child's feet doing?

• Pushing

• Pulling

Multiple Choice

What are the child's arms doing?

• Pushing

• Pulling

Multiple Choice

What force does this picture show?

• Push

• Pull

Multiple Choice

What force is being shown?

• Push

• Pull

Multiple Choice

What force is throwing a ball? 

• push
• pull

Multiple Choice

The sum of potential energy and kinetic energy equals

• work

• transformation

• total energy

• mechanical energy

Multiple Choice

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

Multiple Choice

Which passenger has the most potential energy?

• A

• B

• C

• D

Multiple Choice

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can both be created and destroyed

• energy can neither be created nor destroyed

Multiple Choice

Which is the best example that something has kinetic energy?

• a car parked on a steep hill

• a tennis ball rolling across the court

• a picture hanging on the wall

• a piece of coal before it's burned

Multiple Select

Work is done when which two things happen?

• an object is moved

• power is converted into Newtons

• an object has been subjected to force (unbalanced)

• an object stays in place

Multiple Choice

Which is the best example that something has kinetic energy?

• a car parked on a steep hill

• a tennis ball rolling across the court

• a picture hanging on the wall

• a piece of coal before it's burned

Multiple Choice

Work is only done when an object __________

• moves

• stays still

• articulates

• conjugates

Multiple Choice

Click to look at the picture. 
The picture is an example of _____ .

• gravity
• potential energy
• kinetic energy
• friction

Multiple Choice

Use one of these equations to answer this question (W = Fd) and (P = W/t): Toph pushes against the turret with 500 Newtons of Force. It stays in place. How much work has been done?

• 1200 Joules of work

• 500 Joules of work

• No work has been done

• 200,000 Joules of work

Multiple Choice

Click to look at the picture.
The picture is demonstrating an example of ______ . 

• gravity
• speed
• kinetic energy
• potential energy

Multiple Choice

Use one of these equations to answer this question (W = Fd) and (P = W/t): When Aang fights Ozai, he wields 100,000 Joules in 25 seconds. What is his power?

• 4,000 J/s (Watts)

• 250,000 J/s (Watts)

• 125,000,000 Newtons

• 2,000,000 Joules

Multiple Choice

Potential energy is what type of energy?

• energy that is stored
• energy that is being used
• matter rubbing against matter
• the measure of motion

Multiple Select

Which of the following are examples of kinetic energy? (check all that apply)

• an arrow flying through the air

• a book on a shelf

• kicking a soccer ball

• chewing gum

• sitting at a stop light

Multiple Select

Which of the following is an example of potential energy (check all that apply)

• water in a stream

• a block of ice in the freezer

• a desk in a classroom

• a ball sitting in a goal

• scoring a goal

Multiple Choice

Complete the following sentence. The ________________ an object moves, the more ____________________ energy it has.

• slower ... potential

• faster .... kinetic

• faster ... potential

• slower ... kinetic

Multiple Choice

____________ is the ability to do work or cause change.

• Energy

• Force

• Friction

• Motion

Multiple Choice

Potential energy is __________ energy. 

• motion 
• moving
• slow
• stored

Multiple Choice

Ms. W new condominium had a kitchen cabinet with three shelves in it. On the top shelf Ms. W had short glasses, on the middle shelf she had large glasses, and on the bottom shelf she had plates. Which item has the most potential energy? 

• short glasses
• large glasses
• plates
• They have the same amount of energy

Multiple Choice

True or False: The person in the picture has a lot of potential energy?

• True
• False

Multiple Choice

Which car will be pushed back the farthest?

• Car 1
• Car 2

Multiple Choice

True or False: The arrow has mostly potential energy.

• True
• False

Multiple Choice

True or False: The people on the bench have mostly potential energy. 

• True
• False

Multiple Choice

True or False: The people at the bottom of the hill have mostly potential energy. 

• True
• False

Multiple Choice

When Mr. Bradley's hands collide, the kinetic energy is:

• transferred to another person
• converted into potential energy
• transferred to my ear
• converted into sound energy

Multiple Choice

I have the most energy if I am:

• Running
• Walking
• Eating
• Crawling

Multiple Choice

I have the most potential energy if I am: 

• 5 feet high
• 10 feet high
• 15 feet high
• 20 feet high

Multiple Choice

How can I gain potential energy? (choose the best answer)

• Run a mile
• Walk up the stairs
• Climb a mountain
• Go down the stairs

Multiple Choice

The more kinetic energy is in a collision...

• the more potential energy is released
• the more sound energy is released
• the less potential energy is released
• the less sound energy is released

Multiple Choice

The energy of motion.

• Potential Energy
• Kinetic Energy

Multiple Choice

Use the diagram below to answer the next four questions.
Which car has:  KE = 100 PE = 0

• A
• B
• C
• D

​Does kinetic energy depend on potential energy?

​An object has kinetic energy when it's in motion. The amount of kinetic energy an object has depends on its mass and speed. Potential energy, on the other hand, is a stored energy when an object is at rest.

​What is Chemical Energy?

​Chemical Energy comes from the food we eat which. Our bodies energize it's self by chemical energy.

Multiple Choice

Stored energy.

• Potential Energy
• Kinetic Energy