Work and Energy

The formula for calculating work done is:

• Work = force / distance

• Work = distance / force

• Work = force x distance 

The SI unit of work is:

• newton (N)

• newton metre (Nm)

• m/s

• joule (J)

If you push a box with a force of 30 N for 2 m, how much work have you done?

• 15 J

• 15 N

• 60 J

• 60 N

If you carry a box with a weight of 50 N and walks 10 m, what is the work done by your arms?

• 0 J

• 0.2 J

• 5 J

• 500 J

What is energy?

• force x distance

• ability to do work

• force

• moments

What is potential energy?

• energy associated with motion

• stored energy

• heat energy

• sound energy

What is kinetic energy?

• heat energy

• sound energy

• store energy

• energy associated with motion

What is thermal energy?

• light energy

• total internal kinetic energy of atoms/molecules

• moving energy

• stored energy

What is nuclear energy (you may choose more than 1 answer)

• energy released from the splitting (fission) of nuclei from atoms/isotopes

• energy released from the joining (fusion) of nuclei from atoms/isotopes

• stored energy

• moving energy

What energy does a battery possess?

• chemical potential energy

• elastic potential energy

• thermal energy

• electrical energy