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27 Cards in this Set
- Front
- Back
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What is the formula for average speed? |
Speed = Distance / Time taken |
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What is the formula for average velocity? |
Velocity = Increase in displacement / Time taken |
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What is the formula for acceleration? |
Acceleration = Final Velocity - Initial Velocity / Time taken |
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What is the formula for weight? |
Weight = Mass x Acceleration due to gravity |
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What is the formula for Force in terms of Mass? |
Force = Mass x Acceleration |
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What is the formula for momentum? |
Momentum = Mass x Velocity |
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What is the formula for force in terms of momentum? |
Force = change in momentum / time taken |
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How do you calculate a moment of a force? |
Moment of a force = Force x Perpendicular distance away from pivot |
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What is the formula for orbital speed? |
Orbital Speed = 2 x Pi x Orbital Radius / Time Period |
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What is the formula for power (in watts)? |
Power (watts) = Current (Amps) x Voltage (Volts) |
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What is the formula for energy (in joules)? |
Energy (joules) = Current (amps) x Voltage (volts) x Time (seconds) |
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What is the formula for voltage (in volts)? |
Voltage (in volts) = Current (in amps) x Resistance (in Ohms) |
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What is the formula for charge (in coulombs)? |
Charge (in coulombs) = Current (in amps) x time (in seconds)
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What is the formula for wave speed (in metres per second)? |
Wave Speed (in metres per second) = frequency (in hertz) x wavelength (in metres)
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What is the formula for frequency (in hertz)? |
Frequency (in hertz) = 1 / time period (in seconds)
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What is the formula for Wave Speed? |
Wave Speed (ms-1) = Frequency (hertz) x Wavelength (m) |
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What is the formula for refractive index? |
Refractive Index = Sin I / Sin r |
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What is the formula for Critical Angle? |
Critical Angle (Sin C) = 1 / n (refractive index) |
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What is the formula for efficiency? |
Efficiency = useful energy output from system / total energy output x 100 |
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What is the formula for work done (in joules)? |
Work done (in joules) = Force applied (in Newtons) x Distance through which it is applied (in metres) |
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What is the formula for Power in terms of Work Done? |
Power = Work Done / Time Taken |
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What is the formula for Kinetic Energy? |
Kinetic Energy = 1/2 x mass x speed^2 |
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What is the formula for change in gravitational potential energy (in joules)? |
Change in Gravitational Potential Energy (in joules) = mass of object (in kg) x gravity (in N/kg) x distance raised against gravitational force (in metres) |
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What is the formula for density? |
Density = mass / volume |
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What is the formula for Pressure? |
Pressure = Force / Area |
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What is the formula for Pressure Difference? |
Pressure Difference = Height x Density x Gravity |
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What is the formula for transformers? |
Input (Primary) Voltage / Output (Secondary) Voltage = Number of turns on Primary coil / Number of turns on Secondary coil |
