Work + Power

Question 1

What are the units of work?

Answer 1

The same as the units of energy - joules -J

Question 2

What is work?

Answer 2

The Transfer of energy

Question 3

Equation for Work done is?

Answer 3

Work Done = Force x Distance Moved W.d = Fxd

Force is measured in Newtons - N
Distance moved is measured in metres - M
Work done is measured in joules - J

Question 4

What is power?

Answer 4

Power is the rate of doing work

Question 5

What does a powerful engine do compared to a less powerful engine?

Answer 5

does work (transfers energy) much faster

Question 6

Equation for Power is?

Answer 6

Power = Work done/ time taken P = W.d/t

⚫ Time is measured in seconds (s).
⚫ Power is measured in watts = Joules per second
⚫ Work done is measured in joules (J).