equations

Speed equation

Speed=distance/time

• s=d/t

Acceleration equation

Acceleration=(final velocity-initial velocity)/time

• a=(v-u)/t

Force equation

Force= mass x gravitational field strength

• W=m x g

Momentum equation

Momentum=mass x velocity

• p=m x v

Change in momentum equation

Change in momentum=force x time

• (mv-mu) = F x t

Moment of a force

Moment=force x distance

• M=F x d

Pressure equation

Pressure = force/area

• p=F/a

Density equation

Density=mass/volume

• d = m/v

Kinetic energy equation

• KE = 1/2 mv²

Gravitational potential energy equation

GPE = mgh

Energy transferred equation

Energy transferred = current x potential difference x time

• E = I x V x t

Power with voltage equation

Power = current x voltage

• P= I x V

Power with resistance equation

Power = current² x resistance

• P = I² x R

Potential difference (ohm’s law) equation

Voltage = current x resistance

• V = I x R

Charge equation

Charge = current x time

• Q = I x t

Energy transferred with potential diff. equation

Energy transferred = charge x potential difference

• E = Q x V

Energy transferred with power and time

Energy transferred = power x time

• E = P x t

Wave speed equation

Wave speed =. Frequency x wavelength

• v = fλ

Frequency equation

Frequency = 1/time period

= f= 1/T

Refractive index equation

N = sin(i)/sin( r )

Refractive index equation using critical angle

N = 1/sin( c )