Potential Energy And Energy Conservation: Potential energy

The video tutorial explains the concepts of kinetic and potential energy using practical examples, such as dropping objects from heights. It introduces the formula for potential energy (PE = mgh) and discusses the relationship between work and energy. The tutorial also covers potential energy in springs, using Hooke's Law to describe how energy is stored in compressed or stretched springs.

What happens to the potential energy of an object as its height above the ground increases?

• It becomes zero.

• It increases.

• It remains the same.

• It decreases.

Which of the following factors does NOT affect the potential energy of an object?

• Mass of the object

• Gravitational acceleration

• Height above the ground

• Color of the object

What is the unit of potential energy?

• Meters

• Watts

• Newtons

• Joules

When you lift an object to a higher height, what happens to its potential energy?

• It decreases.

• It becomes negative.

• It remains constant.

• It increases.

What is the relationship between work and potential energy when lifting an object?

• Work increases potential energy.

• Work is unrelated to potential energy.

• Work converts potential energy to kinetic energy.

• Work decreases potential energy.

According to Hooke's Law, what does the spring constant (K) represent?

• The length of the spring

• The color of the spring

• The stiffness of the spring

• The mass of the spring

What happens to the potential energy of a spring when it is compressed or stretched?

• It decreases.

• It becomes zero.

• It increases.

• It remains the same.