Kinetic & Potential Energy

What is Kinetic Energy (KE)?

• The energy an object possesses due to its motion, calculated as KE = 1/2 mv².

• The energy stored in an object at rest.

• The energy required to lift an object against gravity.

• The energy released during a chemical reaction.

Give an example of Kinetic Energy.

• A child running around the playground.

• A book resting on a table.

• A car parked in a garage.

• A tree standing still.

What factors affect Kinetic Energy?

• The mass of the object and its velocity.

• The temperature of the object and its color.

• The shape of the object and the material it is made of.

• The height of the object and the time it is in motion.

How much Kinetic Energy does a 2600 kg car moving at 25 m/s have?

• 500,000 J

• 812,500 J

• 1,000,000 J

• 750,000 J

What is gravitational Potential Energy?

• The energy an object possesses due to its height above the ground, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

• The energy stored in an object due to its motion.

• The energy an object possesses due to its temperature.

• The energy released when an object falls to the ground.

How is Kinetic Energy calculated?

• KE = 1/2 mv²

• KE = mv

• KE = 2m/v

• KE = mgh

What is Potential Energy (PE)?

• Potential Energy is the energy of motion in an object.

• Potential Energy is the stored energy in an object due to its position or state.

• Potential Energy is the energy released during a chemical reaction.

• Potential Energy is the energy associated with the temperature of an object.

What is the relationship between Kinetic and Potential Energy in a roller coaster?

• Potential Energy is highest at the bottom of the hill, and Kinetic Energy is highest at the top.

• Kinetic Energy is constant throughout the ride, while Potential Energy varies.

• Potential Energy is highest at the top of the hill, and Kinetic Energy is highest at the bottom.

• Kinetic Energy is highest at the start of the ride, and Potential Energy is highest at the end.

What is elastic Potential Energy?

• The energy stored in elastic materials as the result of their stretching or compressing.

• The energy produced by moving objects.

• The energy stored in chemical bonds.

• The energy released during nuclear reactions.

What does the Law of Conservation of Energy state?

• Energy can be created and destroyed.

• Energy cannot be created or destroyed, but it can change from one form to another.

• Energy is always constant and cannot change forms.

• Energy can be converted into matter.