Energy Unit Test

What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

• Potential energy decreases and kinetic energy stays the same.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A person moves a ball up a ramp. Which statement describes this process?

• There is no transfer of energy or work done.

• There is a transfer of energy, and work is done.

• There is no transfer of energy, but work is done.

• There is a transfer of energy, but no work is done.

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NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Alan launches a ball of clay into the air using a catapult. He calculates its kinetic energy to be 9.0 J. Then he tears it in half and forms a ball that has half the mass. He launches the smaller ball into the air at the same speed. What is the kinetic energy of the smaller ball?

• 9.0 J

• 3.0 J

• 18.0 J

• 4.5 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

• 
• 
• 
• 

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NGSS.MS-PS2-4

NGSS.MS-PS3-2

In a local competition, students race model cars that they built. The cars were held still at the top of a ramp and then released. Each car’s velocity was measured at the bottom of the ramp to calculate each car’s kinetic energy. Based on the table, which of these could be the potential energy of car 2 at the top of the hill?

• 15 joules

• 12 joules

• 10 joules

• 6 joules

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A restraint is keeping two weights at the same height in a pulley system. The mass of M1 is greater than the mass of M2.

Once the restraint is released, the weights are able to move, and energy is transformed in the system.

Which choice best describes the energy of M1 before the restraint is released?

• kinetic energy

• potential energy

• kinetic energy to potential energy

• potential energy to kinetic energy

Tags

NGSS.MS-PS3-2

A restraint is keeping two weights at the same height in a pulley system. The mass of M1 is greater than the mass of M2.

Once the restraint is released, the weights are able to move, and energy is transformed in the system.

Which choice best describes the energy transformation of M1 as it begins to fall.

• kinetic energy

• potential energy

• kinetic energy to potential energy

• potential energy to kinetic energy

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

A restraint is keeping two weights at the same height in a pulley system. The mass of M1 is greater than the mass of M2.

Once the restraint is released, the weights are able to move, and energy is transformed in the system.

Which choice best describes the energy transformation of M2 as it rises.

• kinetic energy

• potential energy

• kinetic energy to potential energy

• potential energy to kinetic energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Tunisha is holding one end of a spring with a mass hanging from the other end. When the spring is stretched out and released, the mass begins to oscillate up and down, similarly to the way a pendulum swings. Assuming no energy is lost, and the total energy is 100 Joules, what is the kinetic energy at 1 second if the potential energy is 85 Joules.

• 0 Joules

• 25 Joules

• 15 Joules

• 100 Joules

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Tunisha is holding one end of a spring with a mass hanging from the other end. When the spring is stretched out and released, the mass begins to oscillate up and down, similarly to the way a pendulum swings. Assuming no energy is lost, and the total energy is 100 Joules, what is the potential energy at 4 seconds if the kinetic energy is 100 Joules.

• 0 Joules

• 15 Joules

• 30 Joules

• 100 Joules

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5