Unit 1 - Energy

Question 1

Kinetic Energy

Answer 1

Kinetic Energy = 0.5 x mass x speed²

Question 2

GPE

Answer 2

GPE = mass x gravitational field strength x height

Question 3

Power 1

Answer 3

Power = work done / time taken

Question 4

Power 2

Answer 4

Power = energy transferred / time taken

Question 5

Efficiency 1

Answer 5

Efficiency = useful energy output / total energy input

Question 6

Efficiency 2

Answer 6

Efficiency = useful power output / total power input