Exploring Mechanical Energy

What are the two primary forms of mechanical energy?

• Electrical and magnetic energy

• Kinetic and potential energy

• Nuclear and gravitational energy

• Thermal and chemical energy

When a roller coaster climbs a hill, what happens to its kinetic and potential energy?

• Both kinetic and potential energy decrease

• Kinetic energy decreases, potential energy increases

• Kinetic energy increases, potential energy decreases

• Both kinetic and potential energy increase

What principle states that the total mechanical energy remains constant in a closed system without external forces?

• Principle of Relativity

• Newton's First Law

• Conservation of Mechanical Energy

• Law of Thermodynamics

Which of the following is a real-world example of mechanical energy transformation?

• Photosynthesis in plants

• A pendulum swinging

• A battery powering a flashlight

• Evaporation of water

What factors contribute to the loss of mechanical energy in real-world scenarios?

• Sound and light

• Friction and air resistance

• Pressure and volume

• Magnetism and gravity