# Physics Equations Revisions

?
Ek = 1/2 x m x v2
or
Ek= 1/2mv2
Kinetic energy(J) = 0.5 x mass(kg) x velocity squared (m/s)2
1 of 6
Ep = m x g x h
or
Ep = mgh
GPE (J)= mass(kg) x gravitational field strength(N/kg) x height(m)
2 of 6
Ee = 1/2 x k x e2
or
Ee = 1/2ke2
Elastic energy(J) = 0.5 x spring constant(N/m) x extension (m) squared
3 of 6
P= E/T
or
P= W/T
Power(W)= Energy Transferred(J)/Time(s)
or
Power(W)= Work done(J)/Time(s)
4 of 6
W = F x D
Work done = Force x Distance
5 of 6
Efficiency=Useful output energy transfer/
Total input energy transfer
Efficiency= Useful power output/
Total power input
6 of 6

## Other cards in this set

### Card 2

#### Front

GPE (J)= mass(kg) x gravitational field strength(N/kg) x height(m)

Ep = m x g x h
or
Ep = mgh

### Card 3

#### Front

Elastic energy(J) = 0.5 x spring constant(N/m) x extension (m) squared

#### Back ### Card 4

#### Front

Power(W)= Energy Transferred(J)/Time(s)
or
Power(W)= Work done(J)/Time(s)

#### Back ### Card 5

#### Front

Work done = Force x Distance

#### Back 