A.3 - 2 - Work and energy

What is energy?

• The ability to create matter.

• A measurement of the amount of work an object can do.

• A force that causes displacement.

• A vector quantity with both size and direction.

What happens to an object's energy when it performs work?

• It gains energy.

• It loses energy.

• Its energy remains constant.

• Its energy is transformed into mass.

How is work related to an object's energy?

• Work is equal to the object's initial energy.

• Work is equal to the object's final energy.

• Work is equal to the change in the object's energy.

• Work is unrelated to the object's energy.

What does the Law of Conservation of Energy state?

• Energy can be created but not destroyed.

• Energy can be destroyed but not created.

• Energy can be created and destroyed, but only in equal amounts.

• Energy can never be created or destroyed, only transferred or transformed.