Energy

What type of energy is the rocket gaining?

• Mechanical Energy

• Electrical Energy

• Chemical Energy

• Thermal Energy

What is the source of this mechanical energy?

• Mechanical Energy
• Kinetic Energy
• Chemical Energy
• Thermal Energy

What type of energy does the stove transfer to its surroundings?

• Mechanical Energy
• Electrical Energy
• Chemical Energy
• Thermal Energy

What is the source of this thermal energy?

• Mechanical Energy
• Electrical Energy
• Chemical Energy
• Thermal Energy

Which of the following energy transformations allows a ceiling fan to spin?

• Chemical Energy → Mechanical Energy
• Mechanical Energy → Thermal Energy
• Electrical Energy → Thermal Energy
• Electrical Energy → Mechanical Energy

Which of the following energy transformations allows the car to stop?

• Chemical Energy → Mechanical Energy
• Mechanical Energy → Thermal Energy
• Electrical Energy → Thermal Energy
• Electrical Energy → Mechanical Energy

Which of the following correctly defines work?

• the product of force and displacement
• a transfer of mechanical energy
• change in kinetic energy
• all of these are correct

The picture shows an object moving to the left. Which force does negative work on the object?

• A
• B
• C
• none of the above

The picture shows an object moving to the left. Which force does zero work on the object?

• A
• B
• C
• none of the above

Which of the following best describes the work done by the thrust of the engines on the rocket?

• positive work is done
• negative work is done
• no work is done
• cannot be determined