Conservation of Mechanical Energy

At which point is potential energy greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Which point has the most potential energy?

• G

• F

• B

• A

Tags

NGSS.MS-PS3-2

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

• Potential

• Kinetic

• Both potential and kinetic energy

• none of the above

Tags

NGSS.MS-PS3-2

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

Tags

NGSS.MS-PS3-5

Energy that transforms from potential to kinetic is neither_____ nor _______.

• created, force

• created, destroyed

• force,motion

• destroyed, law of conservation of energy

Tags

NGSS.MS-PS3-5

Stored energy or energy due to its position is called

• mechanical energy

• potential energy

• kinetic energy

• thermal energy

Tags

NGSS.MS-PS3-2

When stored energy begins to move the object______ energy from _______ to _________.

• energy, force, motion

• transfers, kinetic, potential

• forces, mechanical, nuclear

• transfers, potential,kinetic

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Explain the principle of conservation of mechanical energy in a pendulum system.

• The principle of conservation of mechanical energy only applies to linear motion

• The total mechanical energy (kinetic + potential) of a pendulum system remains constant if no external forces are present.

• The potential energy of a pendulum system is always greater than the kinetic energy

• The mechanical energy of a pendulum system decreases over time

Answer explanation

The total mechanical energy (kinetic + potential) of a pendulum system remains constant if no external forces are present.

Tags

NGSS.MS-PS3-5

What is an example of mechanical energy conservation?

• Pendulum swinging back and forth

• Car accelerating on a straight road

• Wind blowing through a field

• Water flowing down a waterfall

Answer explanation

The example of mechanical energy conservation is a pendulum swinging back and forth, where the energy is transferred between potential and kinetic energy without any loss.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Explain the concept of potential energy in the context of mechanical energy conservation.

• Potential energy is the energy released during an object's motion

• Potential energy is only relevant in non-mechanical systems

• Potential energy is the energy stored in an object due to its position or state, and it plays a crucial role in the conservation of mechanical energy.

• Potential energy is not affected by an object's position

Answer explanation

Potential energy is the energy stored in an object due to its position or state, and it plays a crucial role in the conservation of mechanical energy.

Tags

NGSS.MS-PS3-2