5. Work, Energy and Power

Front

What is work done equivalent to?

Back

Energy transferred

Front

What are the SI base units equivalent to the Joule?

Back

kgm²s⁻²

Front

How is work done calculated?

Back

W = F x cosΘ (distance moved x component of the force in the direction of motion)

Front

What is Θ in W = F x cosΘ?

Back

The angle between the force and motion.

Front

What is energy?

Back

The capacity of one object or system to do work (or cause a change) on another.

Front

What is represented by the area under a force-distance graph?

Back

Work done.

Front

What is the principle of conservation of energy?

Back

The energy of a closed system always remains constant. Energy can never be created or destroyed, only transferred.

Front

What form of energy is due to the motion of a mass?

Back

kinetic energy

Front

What form of energy is due to the position of a mass in a gravitational field?

Back

gravitational potential energy

Front

What form of energy is due to the bonds between atoms in a substance?

Back

Chemical energy