All GCSE Physics Equations

Question 1

Weight

Answer 1

Weight = Mass x Gravitational field strength

Question 2

Work done

Answer 2

Work done = Force x Distance

Question 3

Force applied to a spring

Answer 3

Force applied to a spring = Spring constant x Extension

Question 4

Distance travelled

Answer 4

Distance travelled = Speed x Time

Question 5

Acceleration

Answer 5

Acceleration = Change in velocity
____________________
Time taken

Question 6

Resultant force

Answer 6

Resultant force = Mass x Acceleration

Question 7

Momentum

Answer 7

Momentum = Mass x Velocity

Question 8

Kinetic energy

Answer 8

Kinetic energy - 1/2 x Mass x (Speed)^2

Question 9

Gravitational potential energy

Answer 9

Gravitational potential energy = Mass x Gravitational field strength x Height

Question 10

Power (energy transferred)

Answer 10

Power = Energy transferred/Time

Question 11

Power (work done)

Answer 11

Power = Work done/Time

Question 12

Efficiency (energy transfer)

Answer 12

Efficiency = Output energy transfer/ Total input energy transfer

Question 13

Efficiency (power)

Answer 13

Efficiency = Useful power output
_______________________
Total power input

Question 14

Wave speed

Answer 14

Wave speed = Frequency x Wavelength

Question 15

Charge flow

Answer 15

Charge flow = Current x Time

Question 16

Potential difference

Answer 16

Potential difference = Current x Resistance

Question 17

Power (potential difference)

Answer 17

Power = Potential difference x Current

Question 18

Power (current)

Answer 18

Power = (Current)^2 x Resistance

Question 19

Energy transferred (transfer red power)

Answer 19

Energy transferred = Power x Time

Question 20

Energy transferred (transfered charge flow)

Answer 20

Energy transferred = Charge flow x Potential difference

Question 21

Density

Answer 21

Density = Mass/Volume