# Physics Equations

• Created by: EvieWong
• Created on: 20-04-18 15:27
Density
density = mass / volume
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Distance
distance = speed x time
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Speed
speed = distance / time
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Acceleration
acceleration= change in velocity / time
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Kinetic Energy
kinetic energy = 0.5 x mass x velocity²
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Force
force = mass x acceleration
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Momentum
momentum = mass x velocity
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Work Done
work done = force x distance
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Power (with work done & time)
power = work done / time
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Power (with energy & time)
power = energy / time
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Force Exerted by Spring
force exerted by spring = spring constant x extension
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Weight
weight = mass x gravitational field strength
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Gravitational Potential Energy
gravitational potential energy = mass x gravitational field strength x height
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Pressure
pressure = force applied to surface / area of surface
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Moment
moment = force x distance (in the direction of the force)
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Charge
charge = current x time
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Potential Difference
potential difference = current x resistance
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Energy Transferred (with charge & potential difference)
energy transferred = charge x potential difference
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Power (with potential difference & current)
power = potential difference x current
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Power (with current & resistance)
power = current² x resistance
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Energy Transferred (with power & time)
energy transferred = power x time
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Wave Speed
wave speed = frequency x wavelength
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Efficiency
efficiency = useful energy transferred / energy supplied
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## Other cards in this set

### Card 2

Distance

#### Back

distance = speed x time

Speed

Acceleration

Kinetic Energy