Energy stored by things that stretch

Gravitational Potential Energy Energy

Steve, Mary, Annie, and James hit four identical tennis balls with a racket. The diagram below shows the top speed at which each tennis ball moved when it was hit. Based on the diagram, which of the following is true about the tennis balls when they were at their top speed?

James's ball had the most kinetic energy.

Steve's ball had the most kinetic energy.

Mary's ball had the most kinetic energy.

Annie's ball had the most kinetic energy.

Kinetic energy is the energy of motion. How could you determine how much kinetic energy an object has?

by finding its height and width

by finding its speed and direction

by finding its position and form

A pitching machine is used to pitch two balls. The speed of both balls is 94 km/hr. The mass of one ball is 5 grams, and the mass of the other ball is 50 grams. Since both balls are traveling at the same speed, which of the following is true?

The 50-gram ball has more kinetic energy than the 5-gram ball.

Neither ball has any kinetic energy.

The 5-gram ball has more kinetic energy than the 50-gram ball.

The balls have the same kinetic energy.

A small car is traveling at a speed of 60 mph on the highway. In the next lane, a large passenger bus is traveling at the same speed. Which of the following is true?

The bus has more kinetic energy than the car.

The car and the bus have potential energy, not kinetic energy.

The car and bus have the same amount of kinetic energy.

The car has more kinetic energy than the bus.

A graph showing the kinetic energy of a ball over time is shown below. Which of the following statements best explains the relationship between the kinetic energy of the ball and its speed?

The kinetic energy of the ball increases as its speed increases.

The kinetic energy of the ball increases over time as the ball travels at a constant speed.

The kinetic energy of the ball decreases as its speed increases.

The kinetic energy of the ball remains the same as its speed increases.

When something is dropped, what type of energy transfer takes place?

Gravitational Potential -> Kinetic -> Sound

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

The total amount of energy is conserved

The total amount of energy is less after a reaction

The total amount of energy is more after a reaction

The Law of Conservation of Energy states:

Energy cannot be created or destroyed, it can only transformed

Energy can created or destroyed but not transformed

Energy can't be created, destroyed or transformed

When a roller coaster is at the bottom of the hill...

The kinetic energy is greatest, and potential energy is least

The potential energy is greatest, and kinetic energy is least

Kinetic and Potential energy are equal

According to the Law of Conservation of Energy, energy can...

Change from one form to another

Potential energy is...

the energy an object has due to its position

the energy an object has due to its motion

In a real life situation, when a roller coaster is released from the top of a hill, halfway down the hill...

Some of the potential is converted to kinetic and a small amount is transformed into thermal energy

Exactly half of the energy is kinetic and half of the energy is potential

Two books of the same mass are on a bookcase. One book is 10 meters above the floor and the other book 8 meters. Which one has more potential energy?

The potential energies are equal

Potential and Kinetic Energy

Authored by Mary Rush

Physics

6th - 8th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Energy due to motion is ____________ energy.

Potential

Energy

Kinetic

Friction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

The faster an object moves, the ________ kinetic energy it has.

less

none of the above

all of the above

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

__________ is stored energy.

Potential

Kinetic

None of the above

All of the above

Tags

NGSS.MS-PS3-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.

Kinetic

Elastic

Gravitional

Chemical

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Food has _________ energy.

Potential

Kinetic

None of the above

All of the above

Tags

NGSS.HS-PS3-2

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Can energy be destroyed?

yes

Tags

NGSS.HS-PS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Can energy be changed?

yes

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

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Potential and Kinetic Energy

Energy due to motion is ____________ energy.

The faster an object moves, the ________ kinetic energy it has.

__________ is stored energy.

When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.

Food has _________ energy.

Can energy be destroyed?

Can energy be changed?

What kind of energy is in a moving skateboard?

What kind of energy is in a rock at the edge of a cliff?

What kind of energy is in flowerpot sitting on a windowsill?

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