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### 26 Cards in this Set

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 Weight Weight N = Mass kg x gravity N/kg Work done Work done J or Nm = force N x distance m Force applied to a spring Force applied to a spring N = spring constant N/m x extention m Moment of a force Moment of a force Nm = force N x distance m Force normal to a surface Force normal to a surface N = pressure Pa x area m2 Distance travelled Distance travelled m = speed m/s x time s Change in velocity Change in velocity m/s = acceleration m/s2 x time taken s Resultant force Resultant force N = mass kg x acceleration m/s2 Momentum Momentum kg m/s = mass kg x velocity m/s Kinetic energy Kinetic energy J = 0.5 x mass kg x speed2 m/s Gravitational potential energy Gravitational potential energy J = mass kg x gravitational field strength N/kg x height m Energy transferred Energy transferred kWh = time h x power kW Work done (in a circuit) Work done J = time s x power kW Wave speed Wave speed m/s = frequency Hz x wavelength m Charge flow Charge flow C = current A x time s Voltage Voltage V = current A x resistance O Power Power kW = current2 A x resistance O Energy transferred Energy transferred kWh = power kW x time h Energy transferred (in circuit) Energy transferred J = charge flow C x voltage V Mass Mass kg = density kg/m3 x volume m3 Pressure in liquid Pressure Pa = height m x density of liquid kg m3 x gravity N/kg SUVAT (V velocity m/s) 2 - (u velocity m/s) 2 = 2 x accel m/s2 x distance m Change in momentum Change in momentum kg m/s = time s x force N Elastic potential energy Elastic potential energy J = 0.5 x spring constant N/m x extension2 m 1 1 = Period ? x frequency Hz Power (definantly in circuit) Power kW = current A x voltage V