Potential and Kinetic Energy

What is gravitational potential energy?

• The energy of motion

• The energy of sound waves

• The energy an object possesses due to its position in a gravitational field.

• The energy stored in a battery

Define mechanical energy.

• The total energy in a system

• The energy stored in chemical bonds

• The sum of potential energy and kinetic energy in a system.

• The energy of motion in a system

Explain the Law of Conservation of Energy.

• Energy can only exist in one form

• Energy can neither be created nor destroyed, only converted from one form to another.

• Energy can be destroyed but not created

• Energy can be created but not converted

How is gravitational potential energy calculated?

• GPE = mgh^4

• GPE = mgh

• GPE = mgh^3

• GPE = mgh^2

What are the two forms of mechanical energy?

• Thermal energy and sound energy

• Frictional energy and nuclear energy

• Chemical energy and electrical energy

• Kinetic energy and potential energy

Give an example of potential energy converting to kinetic energy.

• Roller coaster car going down a hill

• A parked car

• A stationary rock

• A falling leaf

State the relationship between potential and kinetic energy.

• Independent forms of energy

• Interconvertible forms of energy

• Complementary forms of energy

• Opposite forms of energy

How does the Law of Conservation of Energy apply to a roller coaster ride?

• The Law of Conservation of Energy applies to a roller coaster ride by ensuring that the total energy within the system remains constant, with energy being transferred or transformed between potential and kinetic forms.

• The Law of Conservation of Energy states that energy is lost during a roller coaster ride

• The Law of Conservation of Energy does not apply to roller coasters

• The Law of Conservation of Energy only applies to mechanical systems, not roller coasters

What happens to the total mechanical energy of a system if only conservative forces are acting on it?

• It remains constant

• It oscillates

• It decreases

• It becomes negative

Discuss the concept of energy transformation in a pendulum.

• Energy transformation in a pendulum involves the conversion between thermal and electrical energy.

• Energy transformation in a pendulum involves the conversion between potential and kinetic energy as the pendulum swings.

• Energy transformation in a pendulum involves the conversion between sound and light energy.

• Energy transformation in a pendulum involves the conversion between gravitational and nuclear energy.