Law of Conservation of Mechanical Energy

A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed into _________________.

• potential energy; mechanical energy

• elastic potential energy; kinetic energy

• gravitational potential energy; kinetic energy

• elastic kinetic energy; mechanical kinetic energy

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

In the figure, potential energy is being converted into kinetic energy from

• point A to point B

• point B to point C

• The only energy involved here is kinetic.

• Energy is not being converted.

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NGSS.MS-PS3-2

NGSS.MS-PS3-4

What form of energy does a compressed spring have?

• heat energy

• kinetic energy

• chemical energy

• potential energy

The law of Conservation of Energy states ..

• Energy can created or destroyed but not transformed

• Energy cannot be created or destroyed, it can only transformed

• Energy can't be created, destroyed or transformed

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NGSS.HS-PS3-4

At which point does potential energy greatest

• W

• X

• Y

• Z

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NGSS.MS-PS3-2

At which point kinetic energy is greatest?

• W

• X

• Y

• Z

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

An object that has kinetic energy must be...

• lifted above earth's surface.

• in motion

• at rest

• none of the above

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NGSS.MS-PS3-1

Work _____ energy.

• reduces

• reflects

• transfers

• stops

Tags

NGSS.MS-PS3-5

Which equation is correct?

• mechanical energy = kinetic energy – potential energy

• mechanical energy = potential energy – kinetic energy

• mechanical energy = kinetic energy + potential energy

• mechanical energy = kinetic energy × potential energy

Which of the following best describes the Law of Conservation of Mechanical Energy?

• Mechanical energy can be created or destroyed.

• Mechanical energy is always conserved in a closed system.

• Mechanical energy can be transformed into other forms of energy without any loss.

• Mechanical energy is only conserved in the presence of friction.

Tags

NGSS.MS-PS3-5