Unit 1 : Energy

Question 1

Kinetic energy

Answer 1

1/2 x mass x (speed)2
1/2 m(v)2

Question 2

Gpe

Answer 2

Mass x gravitational field strength x height
Mgh

Question 3

Power

Answer 3

Work done/ time taken
Energy transferred/ time taken

Question 4

Efficiency

Answer 4

Useful energy output/ total energy output

Question 5

Elastic potential

Answer 5

1/2 x spring constant x extension^2

Question 6

Change in thermal energy

Answer 6

Mass x specific heat capacity x temp change