Force & Motion Review

A demonstration helps students understand a principle of roller coaster design.

Which answer choice correctly describes the ball's kinetic and potential energy?

• The ball has more potential energy at position X than at position Z.

• The ball has more kinetic energy at position Y than at position W.

• The potential energy and kinetic energy of the ball are equal at position X.

• The potential energy and kinetic energy of the ball are greatest at position Z.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A marble is given potential energy by being placed at Location W. When the marble is released, it rolls down the track.

At which location does the marble have maximum kinetic energy?

• Location W

• Location X

• Location Y

• Location Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

• When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.

• As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.

• When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.

• As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decreases.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

NGSS.MS-PS3-4

The drawing shows two identical airplanes at an air show. The airplanes are flying at the same speed. Airplane W is flying 50 m higher than Airplane X.

Which statement best describes the energy of the two airplanes?

• Airplane W has the greater kinetic energy than Airplane X

• The two airplanes have the same gravitational potential energy but different kinetic energies.

• Airplane X has more gravitational potential energy than Airplane W.

• The two airplanes have the same kinetic energy but different gravitational potential energies.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

A student drew the diagram below to show the movement of water through a hydroelectric dam.

The student used the diagram to describe changes in the potential and kinetic energy of the water. At which location is the gravitational potential energy of the water the greatest?

• Location W

• Location X

• Location Y

• Location Z

Tags

NGSS.MS-PS3-2

Four students were asked to classify the activities of the people in the picture below as examples of either potential or kinetic energy.

Which student correctly classified the activities?

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Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown.

At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?

• Position 1

• Position 2

• Position 3

• Position 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

The diagrams show forces acting on a toy car as it moves to the right. Which diagram shows the toy car that will most likely accelerate to the right based on these conditions.

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Tags

NGSS.MS-PS2-2

Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2.

If the force of friction resisting the student's push is 4 N, what is the net force acting on the board.

• 4 N

• 6 N

• 10 N

• 14 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. Which cart has the greatest change in speed?

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Tags

NGSS.MS-PS2-2