Work done

Question 1

What is work done?

Answer 1

• When force makes an object move

Question 2

How are work and energy related?

Answer 2

• Energy transferred = work done

Question 3

Formula for work done:

Answer 3

Work done = force applied X distance move

W (J) = F (N) X s (m)

Question 4

What happens to work done to overcome friction?

Answer 4

• Energy is transferred to the thermal energy stores of objects causing friction and to surroundings.

Question 5

What happens to work done to overcome friction caused by air resistance?

Answer 5

• Object falling transfers energy

- Gravitational potential energy + Kinetic energy transfer to thermal energy of object