# GCSE Physics AQA: Formula sheet.

First 229 words of the document:

1. Power (Watts) = Voltage (Volts) x Current (Amps)

P = V x I

2. Voltage (Volts) = Current (Amps) x Resistance (Ohms)

V = I x R

3. Charge (Coulombs) = Current (Amps) x time (Seconds)

Q = I x t

4. Energy = Voltage x Charge

E = V x Q

5. Total cost = number of units x cost per unit

6. Efficiency (%) = (useful energy out ÷ total energy in) x

100

7. Gravitational Potential Energy (J) = mass (kg) x gravity x height

(m)

GPE= m x g x h

8. Kinetic Energy = 05 x mass (kg) x velocity2 (m/s)

KE = ½mv2

9. Work done (Joules) = Force (Newtons) x distance (M)

W = F x d

10. Power (Watts) = Energy (Joules) ÷ Time (seconds)

P = E ÷ t

11. Speed = Distance ÷ Time

s = d ÷ t *for units it doesn't matter, if it is km and s, then it will be

km/s, if it is miles and hours it will be mph...

12. Acceleration = Change in velocity (m/s) ÷ time (seconds)

13. Resultant force (N) = mass (kg) x acceleration (m/s2)

F = m x a

14. Weight (N) = mass (kg) x gravity (N/kg)

w = m x g

15. Momentum (kg m/s) = mass (kg) x velocity (m/s)

p = m x v

16. Wave speed (m/s) = frequency (Hertz) x wavelength (m)

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