Topic 5/6 .2

What are the two main types of mechanical energy?

• Thermal and Chemical Energy

• Kinetic and Potential Energy

• Electrical and Nuclear Energy

• Sound and Light Energy

Which of the following best describes kinetic energy?

• Energy stored in an object due to its position

• Energy an object possesses due to its motion

• Energy released during a chemical reaction

• Energy from the sun

A roller coaster at the top of a hill has 5000 J of potential energy. As it descends, this energy is converted into kinetic energy. If no energy is lost, what is the kinetic energy at the bottom of the hill?

• 0 J

• 2500 J

• 5000 J

• 10000 J

If a roller coaster car has a mass of 1000 kg and is moving at a speed of 20 m/s, what is its kinetic energy?

• 200,000 J

• 400,000 J

• 100,000 J

• 800,000 J

What happens to the potential energy of a roller coaster as it climbs a hill?

• It decreases

• It remains constant

• It increases

• It is converted into sound energy

Which of the following scenarios involves the conversion of potential energy to kinetic energy?

• A car accelerating on a flat road

• A book falling off a shelf

• A light bulb being turned on

• A person eating food

• 49 J

• 98 J

• 490 J

• 980 J

Which of the following is true about energy conversion in a roller coaster?

• Energy is created as the coaster moves

• Energy is destroyed when the coaster stops

• Energy is converted from potential to kinetic and vice versa

• Energy remains in the form of potential energy only

If a roller coaster car is at the highest point of a track, what type of energy is at its maximum?

• Kinetic Energy

• Thermal Energy

• Potential Energy

• Chemical Energy

What unit is used to measure energy in the International System of Units (SI)?

• Newton

• Joule

• Watt

• Ampere